0001660134-21-000007 | 10-K | XBRL Viewer

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Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Jan. 31, 2021	Feb. 28, 2021	Jul. 31, 2020
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 31, 2021
Current Fiscal Year End Date	--01-31
Document Transition Report	false
Entity File Number	001-38044
Entity Registrant Name	Okta, Inc.
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	100 First Street, Suite 600
Entity Tax Identification Number	26-4175727
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94105
City Area Code	888
Local Phone Number	722-7871
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	OKTA
Security Exchange Name	NASDAQ
Entity Well-Known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Smaller Reporting Company	false
Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Shell Company	false
Entity Public Float			$ 26.2
Amendment Flag	false
Entity Central Index Key	0001660134
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement relating to the 2021 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. Such Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the registrant's fiscal year ended January 31, 2021.
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		123,053,024
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		8,159,447

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Current assets:
Cash and cash equivalents	$ 434,607	$ 520,048
Short-term investments	2,121,584	882,976
Accounts receivable, net of allowances of $3,451 and $1,166	194,818	130,115
Deferred commissions	45,949	33,636
Prepaid expenses and other current assets	81,609	32,950
Total current assets	2,878,567	1,599,725
Property and equipment, net	62,783	53,535
Operating lease right-of-use assets	149,604	125,204
Deferred commissions, noncurrent	108,555	77,874
Intangible assets, net	27,009	32,529
Goodwill	48,023	48,023
Other assets	24,256	18,505
Total assets	3,298,797	1,955,395
Current liabilities:
Accounts payable	8,557	3,837
Accrued expenses and other current liabilities	53,729	36,887
Accrued compensation	71,906	40,300
Convertible senior notes, net	908,684	100,703
Deferred revenue	502,738	365,236
Total current liabilities	1,545,614	546,963
Convertible senior notes, net, noncurrent	857,387	837,002
Operating lease liabilities, noncurrent	179,518	154,511
Deferred revenue, noncurrent	10,860	6,214
Other liabilities, noncurrent	11,375	5,361
Total liabilities	2,604,754	1,550,051
Commitments and contingencies (Note 11)
Stockholders’ equity:
Preferred stock	0	0
Additional paid-in capital	1,656,096	1,105,564
Accumulated other comprehensive income	5,390	892
Accumulated deficit	(967,456)	(701,124)
Total stockholders’ equity	694,043	405,344
Total liabilities and stockholders’ equity	3,298,797	1,955,395
Class A Common Stock
Stockholders’ equity:
Common stock	12	11
Class B Common Stock
Stockholders’ equity:
Common stock	$ 1	$ 1

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Allowance for accounts receivable	$ 3,451	$ 1,166
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)	100,000,000	100,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	122,824,000	113,990,000
Common stock, outstanding (in shares)	122,824,000	113,990,000
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	120,000,000	120,000,000
Common stock, issued (in shares)	8,159,000	8,648,000
Common stock, outstanding (in shares)	8,159,000	8,648,000

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Revenue
Total revenue	$ 835,424	$ 586,067	$ 399,254
Cost of revenue
Total cost of revenue	217,681	159,382	113,421
Gross profit	617,743	426,685	285,833
Operating expenses
Research and development	222,826	159,269	102,385
Sales and marketing	427,350	340,356	227,960
General and administrative	171,726	112,892	75,110
Total operating expenses	821,902	612,517	405,455
Operating loss	(204,159)	(185,832)	(119,622)
Interest expense	(72,660)	(27,017)	(15,072)
Interest income and other, net	12,891	17,089	9,180
Loss on early extinguishment and conversion of debt	(2,263)	(14,572)	0
Interest and other, net	(62,032)	(24,500)	(5,892)
Loss before provision for (benefit from) income taxes	(266,191)	(210,332)	(125,514)
Provision for (benefit from) income taxes	141	(1,419)	(17)
Net loss	$ (266,332)	$ (208,913)	$ (125,497)
Net loss per share, basic and diluted (in dollars per share)	$ (2.09)	$ (1.78)	$ (1.17)
Weighted-average shares used to compute net loss per share, basic and diluted (in shares)	127,212	117,221	107,504
Subscription
Revenue
Total revenue	$ 796,613	$ 552,688	$ 370,855
Cost of revenue
Total cost of revenue	170,095	116,445	77,354
Professional services and other
Revenue
Total revenue	38,811	33,379	28,399
Cost of revenue
Total cost of revenue	$ 47,586	$ 42,937	$ 36,067

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (266,332)	$ (208,913)	$ (125,497)
Net change in unrealized gains or losses on available-for-sale securities	779	1,220	179
Foreign currency translation adjustments	3,719	(9)	(889)
Other comprehensive income (loss)	4,498	1,211	(710)
Comprehensive loss	$ (261,834)	$ (207,702)	$ (126,207)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Jan. 31, 2018		70,609,898	33,361,106
Beginning balance at Jan. 31, 2018	$ 199,340	$ 7	$ 3	$ 565,653	$ 391	$ (366,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and other activity, net (in shares)		6,465,957	104,084
Issuance of common stock upon exercise of stock options and other activity, net	37,611	$ 1		37,610
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)		615,210
Issuance of common stock under employee stock purchase plan, net of cancellations	13,727			13,727
Issuance of common stock for settlement of RSUs (in shares)		976,248
Issuance of common stock pursuant to charitable donation (in shares)		20,000
Issuance of common stock pursuant to charitable donation	1,008			1,008
Conversion of Class B common stock to Class A common stock (in shares)		22,406,009	(22,406,009)
Conversion of Class B common stock to Class A common stock	0	$ 2	$ (2)
Equity component of convertible senior notes, net of issuance costs	77,631			77,631
Purchases of hedges related to convertible senior notes	(80,040)			(80,040)
Issuance of warrants related to convertible senior notes	52,440			52,440
Stock-based compensation	76,867			76,867
Other comprehensive income	(710)				(710)
Net loss	(125,497)	$ (107,926)	$ (17,571)			(125,497)
Ending balance (in shares) at Jan. 31, 2019		101,093,322	11,059,181
Ending balance at Jan. 31, 2019	252,377	$ 10	$ 1	744,896	(319)	(492,211)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and other activity, net (in shares)		5,323,410	100,007
Issuance of common stock upon exercise of stock options and other activity, net	45,732	$ 1		45,731
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)		322,795
Issuance of common stock under employee stock purchase plan, net of cancellations	18,767			18,767
Issuance of common stock for settlement of RSUs (in shares)		1,716,222
Issuance of common stock for bonus settlement (in shares)		34,600
Issuance of common stock for bonus settlement	2,809			2,809
Issuance of common stock pursuant to charitable donation (in shares)		15,000
Issuance of common stock pursuant to charitable donation	1,746			1,746
Conversion of Class B common stock to Class A common stock (in shares)		2,511,409	(2,511,409)
Conversion of Class B common stock to Class A common stock	0
Equity component of convertible senior notes, net of issuance costs	217,347			217,347
Equity component of early extinguishment of convertible senior notes (in shares)		2,973,311
Equity component of early extinguishment and conversion of convertible senior notes	(26,713)			(26,713)
Proceeds from hedges related to convertible senior notes	405,851			405,851
Payments for warrants related to convertible senior notes	(358,622)			(358,622)
Purchases of capped calls related to convertible senior notes	(74,094)			(74,094)
Stock-based compensation	127,846			127,846
Other comprehensive income	1,211				1,211
Net loss	(208,913)	$ (192,138)	$ (16,775)			(208,913)
Ending balance (in shares) at Jan. 31, 2020		113,990,069	8,647,779
Ending balance at Jan. 31, 2020	$ 405,344	$ 11	$ 1	1,105,564	892	(701,124)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and other activity, net (in shares)	4,368,683	4,113,825	254,858
Issuance of common stock upon exercise of stock options and other activity, net	$ 45,620	$ 1		45,619
Issuance of common stock under employee stock purchase plan, net of cancellations (in shares)		247,131
Issuance of common stock under employee stock purchase plan, net of cancellations	25,911			25,911
Issuance of common stock for settlement of RSUs (in shares)		2,109,393
Issuance of common stock for bonus settlement (in shares)		85,701
Issuance of common stock for bonus settlement	9,818			9,818
Issuance of common stock pursuant to charitable donation (in shares)		42,500
Issuance of common stock pursuant to charitable donation	9,292			9,292
Conversion of Class B common stock to Class A common stock (in shares)		743,190	(743,190)
Conversion of Class B common stock to Class A common stock	0
Exercise of hedges related to convertible senior notes (in shares)		(167,946)
Equity component of convertible senior notes, net of issuance costs	306,220			306,220
Equity component of early extinguishment of convertible senior notes (in shares)		1,660,104
Equity component of early extinguishment and conversion of convertible senior notes	70,493			70,493
Proceeds from hedges related to convertible senior notes	195,046			195,046
Payments for warrants related to convertible senior notes	(175,399)			(175,399)
Purchases of capped calls related to convertible senior notes	(133,975)			(133,975)
Stock-based compensation	197,507			197,507
Other comprehensive income	4,498				4,498
Net loss	(266,332)	$ (248,892)	$ (17,440)			(266,332)
Ending balance (in shares) at Jan. 31, 2021		122,823,967	8,159,447
Ending balance at Jan. 31, 2021	$ 694,043	$ 12	$ 1	$ 1,656,096	$ 5,390	$ (967,456)

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Cash flows from operating activities:
Net loss	$ (266,332)	$ (208,913)	$ (125,497)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation	196,181	126,624	76,320
Depreciation, amortization and accretion	36,865	17,815	8,001
Amortization of debt discount and issuance costs	68,424	25,892	14,279
Amortization of deferred commissions	39,661	28,588	20,852
Deferred income taxes	(1,182)	(2,253)	(765)
Non-cash charitable contributions	9,292	1,746	1,008
Loss on early extinguishment and conversion of debt	2,263	14,572	0
Other, net	5,537	(11)	640
Changes in operating assets and liabilities:
Accounts receivable	(66,373)	(37,515)	(39,682)
Deferred commissions	(81,016)	(61,224)	(41,342)
Prepaid expenses and other assets	(13,174)	(4,080)	(10,334)
Operating lease right-of-use assets	19,053	12,951	17,239
Accounts payable	4,081	1,689	(1,437)
Accrued compensation	44,157	23,034	7,429
Accrued expenses and other liabilities	5,527	9,972	5,800
Operating lease liabilities	(17,150)	(9,716)	(6,642)
Deferred revenue	142,148	116,432	89,303
Net cash provided by operating activities	127,962	55,603	15,172
Cash flows from investing activities:
Capitalization of internal-use software costs	(4,159)	(3,888)	(2,851)
Purchases of property and equipment	(13,083)	(15,442)	(19,811)
Proceeds from sales of property and equipment	0	0	740
Purchases of securities available for sale and other	(2,029,030)	(999,387)	(631,488)
Proceeds from maturities and redemption of securities available for sale	535,123	356,277	298,650
Proceeds from sales of securities available for sale and other	206,129	27,271	173,072
Purchase of intangible assets	(126)	(8,589)	0
Payments for business acquisition, net of cash acquired	0	(44,283)	(15,632)
Net cash used in investing activities	(1,305,146)	(688,041)	(197,320)
Cash flows from financing activities:
Proceeds from issuance of convertible senior notes, net of issuance costs	1,134,841	1,040,660	334,980
Payments for repurchases of convertible senior notes	(446)	(224,414)	0
Purchases of hedges related to convertible senior notes	0	0	(80,040)
Proceeds from hedges related to convertible senior notes	195,046	405,851	0
Proceeds from issuance of warrants related to convertible senior notes	0	0	52,440
Payments for warrants related to convertible senior notes	(175,399)	(358,622)	0
Purchases of capped calls related to convertible senior notes	(133,975)	(74,094)	0
Proceeds from stock option exercises, net of repurchases	45,620	45,363	36,861
Proceeds from shares issued in connection with employee stock purchase plan	25,911	18,767	13,727
Other, net	0	(126)	(206)
Net cash provided by financing activities	1,091,598	853,385	357,762
Effects of changes in foreign currency exchange rates on cash, cash equivalents and restricted cash	2,263	(209)	(632)
Net (decrease) increase in cash, cash equivalents and restricted cash	(83,323)	220,738	174,982
Cash, cash equivalents and restricted cash at beginning of year	531,953	311,215	136,233
Cash, cash equivalents and restricted cash at end of year	448,630	531,953	311,215
Cash paid during the period for:
Interest	3,759	862	403
Income taxes	978	1,123	514
Non-cash investing and financing activities:
Issuance of common stock for repurchases and conversions of convertible senior notes	307,910	380,406	0
Benefit from exercise of hedges related to convertible senior notes	37,076	0	0
Common stock issued as charitable contribution	9,292	1,746	1,008
Operating lease right-of-use assets exchanged for lease liabilities	45,611	16,832	127,575
Property and equipment acquired through tenant improvement allowance	4,811	304	22,236
Property and equipment and other accrued but not yet paid	974	855	7,225
Issuance of common stock for bonus settlement	9,818	2,809	0
Reconciliation of cash, cash equivalents, and restricted cash within the consolidated balance sheets to the amounts shown in the statements of cash flows above:
Total cash, cash equivalents and restricted cash	$ 448,630	$ 311,215	$ 136,233

Overview and Basis of Presentation	12 Months Ended
Overview and Basis of Presentation	Jan. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Overview and Basis of Presentation	Overview and Basis of Presentation Description of Business Okta, Inc. (the Company) is the leading independent identity management platform for the enterprise. The Okta Identity Cloud enables the Company's customers to securely connect the right people to the right technologies and services at the right time. The Company was incorporated in January 2009 as Saasure, Inc., a California corporation, and was later reincorporated in April 2010 under the name Okta, Inc. as a Delaware corporation. The Company is headquartered in San Francisco, California. Basis of Presentation and Principles of Consolidation The accompanying consolidated financial statements, which include the accounts of the Company and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP). All intercompany balances and transactions have been eliminated in consolidation. The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. Actual results could vary from those estimates. The Company’s most significant estimates include the SSP for each distinct performance obligation included in customer contracts with multiple performance obligations, the determination of the period of benefit for deferred commissions, the determination of the effective interest rate of the liability components of its convertible senior notes, the determination of the incremental borrowing rate used for operating lease liabilities, the valuation of deferred income tax assets and the valuation of acquired intangible assets. In March 2020, the World Health Organization (WHO) declared the outbreak of the novel coronavirus, COVID-19, a pandemic, which continues to spread across the globe. The Company considered the impact of COVID-19 on the assumptions and estimates used and determined that there were no material adverse impacts on the consolidated financial statements for the year ended January 31, 2021. As events continue to evolve and additional information becomes available, our assumptions and estimates may change materially in future periods. Foreign Currency The functional currencies of the Company’s foreign subsidiaries are the respective local currencies. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive loss within the consolidated statements of redeemable convertible preferred stock and stockholders’ equity (deficit). Foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of operations and were not material for the years ended January 31, 2021, 2020 or 2019. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenue and expenses are translated at the average exchange rate during the period, and equity balances are translated using historical exchange rates.

Summary of Significant Accounting Policies

12 Months Ended

Jan. 31, 2021

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Segment Information

The Company operates in a single operating segment. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources.

Revenue Recognition

The Company derives revenue from subscription fees (which include support fees) and professional services fees. The Company sells subscriptions to its platform through arrangements that are generally one to five years in length. The Company’s arrangements are generally non-cancellable and non-refundable. Furthermore, if a customer reduces the contracted usage or service level, the customer has no right of refund. The Company’s subscription arrangements do not provide customers with the right to take possession of the software supporting the platform and, as a result, are accounted for as service arrangements. This revenue recognition policy is consistent for sales generated directly with customers and sales generated indirectly through channel partners.

The Company determines revenue recognition through the following steps:

•Identification of the contract, or contracts, with a customer;

•Identification of the performance obligations in the contract;

•Determination of the transaction price;

•Allocation of the transaction price to the performance obligations in the contract; and

•Recognition of revenue when, or as, the Company satisfies a performance obligation.

Subscription Revenue

Subscription revenue, which includes support, is recognized on a straight-line basis over the non-cancellable contractual term of the arrangement, generally beginning on the date that the Company’s service is made available to the customer.

Professional Services Revenue

The Company’s professional services principally consist of customer-specific requests for application integrations, user interface enhancements and other customer-specific requests. Revenue for the Company’s professional services is recognized as services are performed in proportion to their pattern of transfer.

Contracts with Multiple Performance Obligations

Some of the Company’s contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative SSP basis. The Company determines SSP based on observable, if available, prices for those related services when sold separately. When such observable prices are not available, the Company determines SSP based on overarching pricing objectives and strategies, taking into consideration market conditions and other factors, including customer size, volume purchased, market and industry conditions, product-specific factors and historical sales of the deliverables.

Deferred Revenue

Deferred Commissions

Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions for new revenue contracts, including incremental sales to existing customers, are deferred and then amortized on a straight-line basis over a period of benefit, which the Company has determined to be generally five years. The Company determined the period of benefit by taking into consideration the terms of its customer contracts, its technology and other factors. Sales commissions for renewal contracts (which are not considered commensurate with sales commissions for new revenue contracts and incremental sales to existing customers) are deferred and then amortized on a straight-line basis over the related

period of benefit, which is generally the related contract renewal term. Amortization expense is included in sales and marketing expenses in the accompanying consolidated statements of operations.

Sales commissions capitalized as contract costs totaled $81.0 million and $61.3 million in the years ended January 31, 2021 and 2020, respectively. Amortization of contract costs was $39.7 million, $28.6 million and $20.9 million for the years ended January 31, 2021, 2020 and 2019, respectively. There was no impairment loss in relation to the costs capitalized.

Cost of Revenue

Costs of revenue primarily consist of costs related to providing the Company’s cloud-based platform to its customers, including third-party hosting fees, amortization of capitalized internal-use software and finite-lived purchased developed technology, customer support, other employee-related expenses for security, technical operations and professional services staff, and allocated overhead costs.

Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents consist of cash on hand and highly liquid investments with original maturities of three months or less from the date of purchase. Cash equivalents generally consist of investments in money market funds. The fair market value of cash equivalents approximated their carrying value as of January 31, 2021 and 2020.

As of January 31, 2021 and 2020, the Company's long-term restricted cash balance was $9.5 million and $11.4 million, respectively, primarily related to letters of credit for its facility lease agreements.

Short-Term Investments

The Company’s short-term investments comprise U.S. treasury securities and corporate debt securities. The Company determines the appropriate classification of its short-term investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its short-term investments as available-for-sale securities as the Company may sell these securities at any time for use in its current operations or for other purposes, even prior to maturity. As a result, short-term investments, including securities with stated maturities beyond twelve months, are classified within current assets in the consolidated balance sheets.

Available-for-sale securities are recorded at fair value each reporting period and are periodically evaluated for unrealized losses. For unrealized losses in securities that the Company intends to hold and will not more likely than not be required to sell before recovery, the Company further evaluates whether declines in fair value below amortized cost are due to credit or non-credit related factors.

The Company considers credit related impairments to be changes in value that are driven by a change in the creditor’s ability to meet its payment obligations, and records an allowance and recognizes a corresponding loss in interest income and other, net when the impairment is incurred. Unrealized non-credit related losses and unrealized gains are reported as a separate component of accumulated other comprehensive loss in the consolidated balance sheets until realized. Realized gains and losses are determined based on the specific identification method and are reported in interest income and other, net in the consolidated statements of operations.

Accounts Receivable and Allowances

Accounts receivable are recorded at the invoiced amount, net of allowances. These allowances are based on the Company’s assessment of the collectibility of accounts by considering the age of each outstanding invoice, the collection history of each customer, and an evaluation of current expected risk of credit loss based on current economic conditions and reasonable and supportable forecasts of future economic conditions over the life of the receivable. We assess collectibility by reviewing accounts receivable on an aggregated basis where similar characteristics exist and on an individual basis when we identify specific customers with collectibility issues. Amounts deemed uncollectible are recorded as an allowance in the consolidated balance sheets with an offsetting decrease in deferred revenue or a charge to general and administrative expense in the consolidated statements of operations.

As of January 31, 2021, allowances include collectibility concerns stemming from business and market disruption caused by COVID-19 and may fluctuate materially in future periods as the duration and severity of the impact of the COVID-19 pandemic remains uncertain.

Property and Equipment

Property and equipment, net, is stated at cost less accumulated depreciation. Depreciation is recorded using the straight-line method over the estimated useful lives of the respective assets. Repairs and maintenance costs are expensed as incurred.

The useful lives of property and equipment are as follows:


			Useful lives
Capitalized internal-use software costs			3 years
Computers and equipment			3 years
Furniture and fixtures			7 years
Leasehold improvements			Shorter of estimated useful life or remaining lease term

Business Combinations

When the Company acquires a business, the purchase price is allocated to the net tangible and identifiable intangible assets acquired based on their estimated fair values. Any residual purchase price is recorded as goodwill. The allocation of the purchase price requires management to make significant estimates in determining the fair values of assets acquired and liabilities assumed, especially with respect to intangible assets. These estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital and the cost savings expected to be derived from acquiring an asset. These estimates are inherently uncertain and unpredictable. During the measurement period, which may be up to one year from the acquisition date, adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed may be recorded, with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations.

Goodwill and Other Long-Lived Assets

The excess of the purchase price over the estimated fair value of net assets of businesses acquired in a business combination is recognized as goodwill. Goodwill is tested for impairment annually on November 1st or more frequently if certain indicators are present.

Long-lived assets, such as property and equipment and finite-lived intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of any asset may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount to the estimated undiscounted future cash flows expected to be generated. If the carrying amount exceeds the undiscounted cash flows, the assets are determined to be impaired and an impairment charge is recognized as the amount by which the carrying amount exceeds its fair value.

The Company amortizes intangible assets with finite lives on a straight-line basis over their estimated useful lives in cost of revenue in the consolidated statements of operations.

Operating Leases and Incremental Borrowing Rate

The Company leases office space under operating leases with expiration dates through 2028. The Company determines whether an arrangement constitutes a lease and records lease liabilities and right-of-use assets on its consolidated balance sheets at lease commencement. Lease liabilities are measured based on the present value of the total lease payments not yet paid discounted based on the more readily determinable of either the rate implicit in the lease or the Company’s incremental borrowing rate, which is the estimated rate the Company would be required to pay for a collateralized borrowing equal to the total lease payments over the term of the lease. Lease liabilities due within twelve months are included within accrued expenses and other current liabilities on the Company's consolidated balance sheet. The estimation of the incremental borrowing rate is based on an estimate of the Company's unsecured borrowing rate for its Notes, adjusted for tenor and collateralized security features. Right-of-use assets are measured based on the corresponding lease liability adjusted for (i) payments made to the lessor at or before the commencement date, (ii) initial direct costs incurred and (iii) tenant incentives received, incurred or payable under the lease. Recognition of rent expense begins when the lessor makes the underlying asset available to the Company. The Company does not assume renewals or early terminations of its leases unless it is reasonably certain to exercise these options at commencement and does not allocate consideration between lease and non-lease components.

For short-term leases, the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term and records variable lease payments as incurred.

Convertible Senior Notes

The Company accounts for the issuance of convertible senior notes in accordance with FASB ASC Subtopic 470-20, Debt with Conversion and Other Options. Pursuant to ASC Subtopic 470-20, as the Notes have a net settlement feature and may be settled wholly or partially in cash upon conversion, the Company is required to separately account for the liability (debt) and equity (conversion option) components of the instrument. The carrying amount of the liability component is computed by estimating the fair value of a similar liability without the conversion option using income and market based approaches. For the income-based approach, the Company uses a convertible bond pricing model that includes several assumptions such as volatility, the risk-free rate, and observable trading activity for the Company's existing Notes. For the market-based approach, the Company observes the price of derivative instruments purchased in conjunction with our convertible senior note issuances or the Company evaluates issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The amount of the equity component is then calculated by deducting the fair value of the liability component from the principal amount of the instrument. This difference represents a debt discount that is amortized to interest expense over the respective terms of the Notes using an effective interest rate method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, the allocation of issuance costs incurred between the liability and equity components were based on their relative values.

Similarly, in accordance with ASC Subtopic 470-20, transactions involving contemporaneous exchanges of cash between the same debtor and creditor in connection with the issuance of a new debt obligation and satisfaction of an existing debt obligation by the debtor should be evaluated as a modification or an exchange transaction depending on whether the exchange is determined to have substantially different terms. When the exchange is deemed to have substantially different terms due to a significant difference between the value of the conversion option immediately prior to and after the exchange, the transaction is accounted for as a debt extinguishment. Pursuant to ASC Subtopic 470-20, total consideration for the satisfaction of an existing debt obligation is separated into liability and equity components by estimating the fair value of a similar liability without a conversion option and assigning the residual value to the equity component. The effective interest rate used to estimate the fair value of the liability component is based on the income and market based approaches used to determine the effective interest rate of the new debt obligation, adjusted for the remaining tenor of the extinguished debt. The difference between the fair value and the amortized carrying value of the extinguished debt, net of the proportionate amounts of unamortized debt discount and remaining unamortized debt issuance costs, is recorded as a gain or loss on extinguishment.

Advertising Expenses

Advertising costs are expensed as incurred. Advertising expense was $33.1 million, $17.0 million, and $10.0 million for the years ended January 31, 2021, 2020 and 2019.

Income Taxes

The Company accounts for income taxes in accordance with the liability method of accounting for income taxes. Under this method, the Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial reporting and tax basis of assets and liabilities, as well as for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates that are expected to apply to taxable income for the years in which those tax assets and liabilities are expected to be realized or settled.

The Company records a valuation allowance to reduce its deferred tax assets to the net amount that the Company believes is more likely than not to be realized. In assessing the need for a valuation allowance, the Company has considered its historical levels of income, expectations of future taxable income and ongoing tax planning strategies. Because of the uncertainty of the realization of the deferred tax assets, the Company has recorded a full valuation allowance against its deferred tax assets. Realization of its deferred tax assets is dependent primarily upon future U.S. taxable income.

The Company recognizes and measures tax benefits from uncertain tax positions using a two-step approach.

The first step is to evaluate the tax position taken or expected to be taken by determining if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained in an audit, including resolution of any related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. Significant judgment is required to evaluate uncertain tax positions.

Although the Company believes that it has adequately reserved for its uncertain tax positions, it can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax position on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, correspondence with tax authorities during the course of an audit and effective settlement of audit issues.

To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and results of operations. The provision for income taxes includes the effects of any accruals that the Company believes are appropriate, as well as the related net interest and penalties.

Concentrations of Risk and Significant Customers

The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, short-term investments and accounts receivable. Cash and cash equivalents and short-term investments are currently held in three financial institutions and, at times, may exceed federally insured limits.

As of January 31, 2021 and 2020 and for each of the three years ended January 31, 2021, no single customer represented greater than 10% of accounts receivable or greater than 10% of revenue, respectively.

Geographical Information

Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area (in thousands):


	Year Ended January 31,
	2021		2020		2019
United States	$	701,635	$	494,529	$	337,367
International	133,789		91,538		61,887
Total	$	835,424	$	586,067	$	399,254

Other than the United States, no individual country exceeded 10% of total revenue for the years ended January 31, 2021, 2020 and 2019.

Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of January 31, 2021 and 2020, substantially all of the Company’s property and equipment was located in the United States.

Net Loss per Share

The Company computes basic and diluted net loss per share attributable to common stockholders in conformity with the two-class method required for participating securities. Under the two-class method, basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase, without consideration for potentially dilutive securities as they do not share in losses. The diluted net loss per share attributable to common stockholders is computed giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, unvested restricted stock units (RSUs) purchase rights issued under the 2017 Employee Stock Purchase Plan shares subject to repurchase from early exercised options, unvested common stock and restricted stock issued in connection with certain business combinations, convertible senior notes and warrants are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is antidilutive. Since the Company's IPO, Class A and Class B common stock are the only outstanding equity of the Company. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion rights. See Note 15.

Recently Adopted Accounting Pronouncements

In June 2016, the FASB issued Accounting Standards Update (ASU) 2016-13, which changes the existing incurred loss impairment model for financial assets held at amortized cost. The new model uses a forward-looking expected loss method to calculate credit loss estimates. ASU 2016-13 also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. These changes will result in earlier recognition of credit losses. The Company adopted the requirements of ASU 2016-13 as of February 1, 2020 on a modified retrospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (ASU 2018-15), which requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in Accounting Standards Codification 350-40 to determine which implementation costs to defer and recognize as an asset. The Company adopted the requirements of ASU 2018-15 as of February 1, 2020 on a prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes (ASU 2019-12), as part of its Simplification Initiative to reduce the cost and complexity in accounting for income taxes. ASU 2019-12 removes certain exceptions related to the approach for intraperiod tax allocation and clarifies the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. The guidance is effective for interim and annual periods beginning after December 15, 2020, with early adoption permitted. The Company early adopted ASU 2019-12 as of February 1, 2020 on a

prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity (ASU 2020-06), which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity, including convertible instruments and contracts in an entity’s own equity. Among other changes, ASU 2020-06 removes from GAAP the liability and equity separation model for convertible instruments with a cash conversion feature, and as a result, after adoption, entities will no longer separately present in equity an embedded conversion feature for such debt. Similarly, the embedded conversion feature will no longer be amortized into income as interest expense over the life of the instrument. Instead, entities will account for a convertible debt instrument wholly as debt unless (1) a convertible instrument contains features that require bifurcation as a derivative under ASC Topic 815, Derivatives and Hedging, or (2) a convertible debt instrument was issued at a substantial premium. Among other potential impacts, this change is expected to reduce reported interest expense, increase reported net income, and result in a reclassification of certain conversion feature-related balance sheet amounts from stockholders’ equity to liabilities as it relates to the Company’s convertible senior notes. Additionally, ASU 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share (EPS), which is consistent with the Company’s accounting treatment under the current standard. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted for fiscal years beginning after December 15, 2020, and can be adopted on either a fully retrospective or modified retrospective basis. The Company is currently evaluating the timing, method of adoption and overall impact of this standard on its consolidated financial statements.

Business Combinations	12 Months Ended
Business Combinations	Jan. 31, 2021
Business Combinations [Abstract]
Business Combinations	Business Combinations During the year ended year ended January 31, 2020, the Company completed a business combination for a purchase price of $44.2 million, net of $1.1 million in cash acquired. The Company recorded $15.7 million for developed technology intangible assets with an estimated useful life of five years and recorded $29.9 million of goodwill which is primarily attributed to the assembled workforce as well as the integration of the acquired technology. The Company incurred $3.0 million of acquisition-related costs, which were recorded as general and administrative expense in the quarter ended April 30, 2019. The Company also entered into deferred compensation arrangements in connection with prior acquisitions totaling $10.8 million, of which $3.0 million was recognized as compensation during the year ended January 31, 2021. The remaining deferred compensation balance is immaterial. These acquisitions did not have a material impact on the Company’s consolidated financial statements; therefore, historical and proforma disclosures have not been presented.

Cash Equivalents and Short-term Investments

12 Months Ended

Jan. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Cash Equivalents and Short-term Investments

The amortized cost, unrealized gain (loss) and estimated fair value of the Company’s cash equivalents and short-term investments as of January 31, 2021 and 2020 were as follows (in thousands):


	As of January 31, 2021
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	311,257	$	—	$	—	$	311,257



Total cash equivalents	311,257		—		—		311,257
Short-term investments:


U.S. treasury securities	1,888,882		1,571		(22)		1,890,431
Corporate debt securities	230,726		429		(2)		231,153
Total short-term investments	2,119,608		2,000		(24)		2,121,584
Total	$	2,430,865	$	2,000	$	(24)	$	2,432,841


	As of January 31, 2020
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	416,584	$	—	$	—	$	416,584
U.S. treasury securities	19,996		—		—		19,996
Total cash equivalents	436,580		—		—		436,580
Short-term investments:


U.S. treasury securities	575,920		686		(8)		576,598
Corporate debt securities	305,859		519		—		306,378
Total short-term investments	881,779		1,205		(8)		882,976
Total	$	1,318,359	$	1,205	$	(8)	$	1,319,556

All short-term investments were designated as available-for-sale securities as of January 31, 2021 and 2020.

The following table presents the contractual maturities of the Company's short-term investments as of January 31, 2021 and 2020 (in thousands):


	As of January 31, 2021
	Amortized Cost		Estimated Fair Value
Due within one year	$	1,509,241	$	1,510,810
Due between one to five years	610,367		610,774
Total	$	2,119,608	$	2,121,584

As of January 31, 2021 and 2020, the Company included $31.0 million and nil, respectively, of unsettled maturities of short-term investments in Prepaid expenses and other current assets.

The Company included $10.5 million and $5.7 million of interest receivable in Prepaid expenses and other current assets as of January 31, 2021 and 2020, respectively. The Company did not recognize an allowance for credit losses against interest receivable as of January 31, 2021 and 2020 because such potential losses were not material.

The Company had 10 and 7 short-term investments in unrealized loss positions as of January 31, 2021 and 2020, respectively. There were no material gross unrealized gains or losses from available-for-sale securities and no material realized gains or losses from available-for-sale securities that were reclassified out of accumulated other comprehensive income for the years ended January 31, 2021, 2020 and 2019.

For available-for-sale debt securities that have unrealized losses, the Company evaluates whether (i) the Company has the intention to sell any of these investments, (ii) it is not more likely than not that the Company will be required to sell any of these available-for-sale debt securities before recovery of the entire amortized cost basis

and (iii) the decline in the fair value of the investment is due to credit or non-credit related factors. Based on this evaluation, the Company determined that for short-term investments, there were no material credit or non-credit related impairments as of January 31, 2021 and 2020.

Fair Value Measurements

12 Months Ended

Jan. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

The Company measures its financial assets at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Three levels of inputs may be used to measure as follows:

Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in

active markets.

Level 2—Valuations based on other inputs that are directly or indirectly observable in the marketplace.

Level 3—Valuations based on unobservable inputs that are supported by little or no market activity.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents information about the Company’s financial assets that were measured at fair value on a recurring basis using the above input categories (in thousands):


	As of January 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	311,257	$	—	$	—	$	311,257



Total cash equivalents	311,257		—		—		311,257
Short-term investments:


U.S. treasury securities	—		1,890,431		—		1,890,431
Corporate debt securities	—		231,153		—		231,153
Total short-term investments	—		2,121,584		—		2,121,584
Total cash equivalents and short-term investments	$	311,257	$	2,121,584	$	—	$	2,432,841


	As of January 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	416,584	$	—	$	—	$	416,584
U.S. treasury securities	—		19,996		—		19,996
Total cash equivalents	416,584		19,996		—		436,580
Short-term investments:


U.S. treasury securities	—		576,598		—		$	576,598
Corporate debt securities	—		306,378		—		306,378
Total short-term investments	—		882,976		—		882,976
Total cash equivalents and short-term investments	$	416,584	$	902,972	$	—	$	1,319,556

The carrying amounts of certain financial instruments, including cash held in banks, accounts receivable and accounts payable approximate fair value due to their short-term maturities and are excluded from the fair value table above.

Fair Value Measurements of Other Financial Instruments

The following table presents the carrying amounts and estimated fair values of our financial instruments that are not recorded at fair value on the consolidated balance sheets (in thousands):


	As of January 31, 2021
	Net Carrying Amount(1)		Estimated Fair Value
2023 convertible senior notes	$	36,092	$	216,926
2025 convertible senior notes	$	885,465	$	1,605,508
2026 convertible senior notes	$	867,643	$	1,493,850

(1) Before unamortized debt issuance costs.

The principal amounts of the 2023 Notes, the 2025 Notes and the 2026 Notes are $40.2 million, $1,060.0 million and $1,150.0 million, respectively. The difference between the principal amounts of the 2023 Notes, the 2025 Notes and the 2026 Notes and the respective net carrying amounts before unamortized debt issuance costs represents the unamortized debt discount (See Note 9 for additional details). The estimated fair values of the Notes, which are Level 2 financial instruments, were determined based on the quoted bid prices of the Notes in an over-the-counter market on the last trading day of the reporting period. As of January 31, 2021, the difference between the net carrying amount of the Notes and their estimated fair values represented the equity conversion value premium the market assigned to the Notes. Based on the closing price of our common stock of $259.01 on January 31, 2021, the if-converted value of the 2023 Notes, 2025 Notes and 2026 Notes exceeded the principal amount of $40.2 million, $1,060.0 million and $1,150.0 million, respectively

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Goodwill and Intangible Assets, net

12 Months Ended

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, net

Goodwill

As of January 31, 2021 and 2020, goodwill was $48.0 million. During the year ended January 31, 2020, the Company recorded $29.9 million of goodwill in connection with a business combination that was completed in March 2019. No goodwill impairments were recorded during the years ended January 31, 2021, 2020 and 2019.

Intangible Assets, net

Intangible assets consisted of the following (in thousands):


	As of January 31, 2021
	Gross		Accumulated Amortization		Write-offs		Net
Capitalized internal-use software costs	$	30,259	$	(19,478)	$	—	$	10,781
Purchased developed technology	28,800		(12,694)		—		16,106
Software licenses	126		(4)		—		122
	$	59,185	$	(32,176)	$	—	$	27,009


	As of January 31, 2020
	Gross		Accumulated Amortization		Write-offs		Net
Capitalized internal-use software costs	$	24,890	$	(14,828)	$	(119)	$	9,943
Purchased developed technology	28,800		(6,321)		—		22,479
Software licenses	1,112		(1,005)		—		107
	$	54,802	$	(22,154)	$	(119)	$	32,529

The Company capitalized $5.5 million and $5.1 million of internal-use software costs during the years ended January 31, 2021 and 2020, respectively.

During the year ended January 31, 2020, the Company recorded $24.2 million of purchased developed technology in connection with a business combination and an asset acquisition. The remaining weighted-average useful life of all purchased developed technology was 3.1 years and 3.9 years as of January 31, 2021, and 2020, respectively.

Amortization expense of intangible assets for the years ended January 31, 2021, 2020 and 2019 was $11.1 million, $10.6 million, and $5.8 million, respectively.

As of January 31, 2021, estimated remaining amortization expense for the intangible assets by fiscal year was as follows (in thousands):



	Remaining Amortization
2022	$	10,354
2023	8,416
2024	7,354
2025	885


Total	$	27,009

Balance Sheet Components

12 Months Ended

Jan. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

Property and Equipment, net

Property and equipment consisted of the following (in thousands):


	As of January 31,
	2021		2020
Computers and equipment	$	1,242	$	3,567
Furniture and fixtures	13,948		11,014
Leasehold improvements	69,862		55,363
Property and equipment, gross	85,052		69,944
Less accumulated depreciation	(22,269)		(16,409)
Property and equipment, net	$	62,783	$	53,535

Depreciation expense was $9.4 million, $8.8 million and $5.7 million for the years ended January 31, 2021, 2020 and 2019, respectively.

Allowances

The Company’s accounts receivable allowances for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	As of January 31,
	2021		2020		2019
Balance, beginning of period	$	1,166	$	2,098	$	1,472
Additions (reductions)	3,252		(673)		888
Write-offs	(967)		(259)		(262)
Balance, end of period	$	3,451	$	1,166	$	2,098

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):


	As of January 31,
	2021		2020

Accrued expenses	$	24,717	$	22,530

Accrued taxes payable	2,462		1,591
Operating lease liabilities	23,403		12,064
Other	3,147		702
Accrued expenses and other current liabilities	$	53,729	$	36,887

Other Liabilities, Noncurrent

Other liabilities, noncurrent consisted of the following (in thousands):


	As of January 31,
	2021		2020


Deferred tax liabilities	$	3,877	$	1,558
Other	7,498		3,803
Other liabilities, noncurrent	$	11,375	$	5,361

Deferred Revenue and Performance Obligations	12 Months Ended
Deferred Revenue and Performance Obligations	Jan. 31, 2021
Revenue from Contract with Customer [Abstract]
Deferred Revenue and Performance Obligations	Deferred Revenue and Performance Obligations Deferred Revenue Deferred revenue, which is a contract liability, consists primarily of payments received and accounts receivable recorded in advance of revenue recognition under the Company’s contracts with customers and is recognized as the revenue recognition criteria are met. Subscription revenue recognized during the years ended January 31, 2021 and 2020 that was included in the deferred revenue balances at the beginning of the respective periods was $361.0 million and $241.1 million, respectively. Professional services and other revenue recognized in the years ended January 31, 2021 and 2020 from deferred revenue balances at the beginning of the respective periods was not material. Transaction Price Allocated to the Remaining Performance Obligations Transaction price allocated to the remaining performance obligations represents all future, non-cancellable contracted revenue that has not yet been recognized, inclusive of deferred revenue that has been invoiced and non-cancellable amounts that will be invoiced and recognized as revenue in future periods. As of January 31, 2021, total remaining non-cancellable performance obligations under the Company’s subscription contracts with customers was approximately $1,796.9 million. Of this amount, the Company expects to recognize revenue of approximately $841.8 million, or 47%, over the next 12 months, with the balance to be recognized as revenue thereafter. Remaining performance obligations for professional services and other contracts as of January 31, 2021 were not material.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Convertible Senior Notes, Net

12 Months Ended

Jan. 31, 2021

Debt Disclosure [Abstract]

Convertible Senior Notes, Net

2023 Convertible Senior Notes

The 2023 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.25% per year. Interest is payable in cash semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2018. The 2023 Notes mature on February 15, 2023 unless earlier repurchased or converted. The Company may not redeem the 2023 Notes prior to maturity. The total net proceeds from the 2023 Notes, after deducting initial purchasers’ discounts and debt issuance costs, was $335.0 million.

In September 2019, the Company used part of the net proceeds from the issuance of the 2025 Notes to repurchase a portion of the 2023 Notes, which consisted of a repurchase of $224.4 million aggregate principal amount of the 2023 Notes in privately-negotiated transactions for aggregate consideration of $604.8 million, consisting of approximately $224.4 million in cash and approximately 3.0 million shares of Class A common stock. The $604.8 million in aggregate consideration was allocated between the debt and equity components in the amounts of $197.7 million and $407.1 million, respectively, using an effective interest rate of 4.00% to determine the fair value of the liability component. As of the repurchase date, the carrying value of the notes subject to the First Partial Repurchase of 2023 Notes, net of unamortized debt discount and issuance costs, was $183.1 million. The First Partial Repurchase of 2023 Notes resulted in a $14.6 million loss on early debt extinguishment during the year ended January 31, 2020, of which $3.8 million consisted of unamortized debt issuance costs.

In June 2020, the Company used part of the net proceeds from the issuance of the 2026 Notes to repurchase a portion of the 2023 Notes, which consisted of a repurchase of $69.9 million aggregate principal amount of the 2023 Notes in privately-negotiated transactions, for aggregate consideration of $260.5 million, consisting of approximately $0.2 million in cash and approximately 1.4 million shares of Class A common stock. The $260.5

million in aggregate consideration was allocated between the debt and equity components in the amounts of $61.8 million and $198.7 million respectively, using an effective interest rate of 4.90% to determine the fair value of the liability component. As of the repurchase date, the carrying value of the notes subject to the Second Partial Repurchase of 2023 Notes, net of unamortized debt discount and issuance costs, was $59.6 million. The Second Partial Repurchase of 2023 Notes resulted in a $2.2 million loss on early debt extinguishment during the year ended January 31, 2021, of which $1.0 million consisted of unamortized debt issuance costs.

The interest rates used in the 2023 Notes Partial Repurchases were based on the income and market based approaches used to determine the effective interest rate of the 2025 Notes and 2026 Notes, adjusted for the remaining tenor of the 2023 Notes. As of January 31, 2021, $40.2 million of principal remained outstanding on the 2023 Notes.

The terms of the 2023 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2023 Indenture). Upon conversion, the 2023 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.

The 2023 Notes are convertible at an initial conversion rate of 20.6795 shares of Class A common stock per $1,000 principal amount of the 2023 Notes, which is equal to an initial conversion price of approximately $48.36 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the 2023 Indenture. Prior to the close of business on the business day immediately preceding October 15, 2022, holders of the 2023 Notes may convert all or a portion of their 2023 Notes only in multiples of $1,000 principal amount, under the following circumstances:

•during any fiscal quarter commencing after the fiscal quarter ending on April 30, 2018 (and only during such fiscal quarter), if the last reported sale price of Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2023 Notes on each applicable trading day;

•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2023 Notes for each trading day of that five consecutive trading day period was less than 98% of the product of the last reported sale price of Class A common stock and the conversion rate on such trading day; or

•upon the occurrence of specified corporate events, as described in the 2023 Indenture.

On or after October 15, 2022 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2023 Notes regardless of the foregoing circumstances. For at least 20 trading days during the period of 30 consecutive trading days ended January 31, 2021, the last reported sale price of the Company’s common stock was equal to or exceeded 130% of the conversion price of the 2023 Notes on each applicable trading day. As a result, the 2023 Notes are convertible at the option of the holders during the fiscal quarter ending April 30, 2021 and were classified as current liabilities on the consolidated balance sheet as of January 31, 2021.

During the year ended January 31, 2021, the Company paid approximately $0.3 million in cash and issued approximately 0.2 million shares of Class A common stock to settle approximately $10.4 million principal amount of 2023 Notes (not in connection with the Second Partial Repurchase of the 2023 Notes). The loss on early note conversion was not material. During the fourth quarter of fiscal 2021, the Company received additional conversion requests, and approximately $4.3 million aggregate principal amount of the 2023 Notes were primarily settled in shares of Class A common stock in the first quarter of fiscal 2022. In addition, subsequent to January 31, 2021, the Company received conversion requests for approximately $3.2 million aggregate principal amount of the 2023 Notes.

Holders of the 2023 Notes who convert their 2023 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the 2023 Indenture) are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the 2023 Indenture), holders of the 2023 Notes may require the Company to repurchase all or a portion of their 2023 Notes at a price equal to 100% of the principal amount of the 2023 Notes being repurchased, plus any accrued and unpaid interest.

In accounting for the issuance of the 2023 Notes, the Company separated the 2023 Notes into liability and equity components, using an effective interest rate of 5.68% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility and the risk-free rate. For the market approach, the Company observed the price of the Note Hedges (see below) it purchased for its 2023 Notes and also performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2023 Notes (in thousands):


	Year Ended January 31,
	2021		2020
Contractual interest expense	$	180	$	606
Amortization of debt issuance costs	312		985
Amortization of debt discount	3,316		11,219
Total	$	3,808	$	12,810

Total initial issuance costs of $10.0 million related to the 2023 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2023 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company initially recorded liability issuance costs of $7.7 million and equity issuance costs of $2.3 million.

The 2023 Notes, net consisted of the following (in thousands):


	As of January 31, 2021
Liability component:
Principal	$	40,246
Less: unamortized debt issuance costs and debt discount	(4,591)
Net carrying amount	$	35,655

Equity component:
2023 Notes	$	9,328
Less: issuance costs	(271)
Carrying amount of the equity component(1)	$	9,057

(1) Included in the consolidated balance sheets within Additional paid-in capital.

Note Hedges

In connection with the pricing of the 2023 Notes, the Company entered into convertible note hedges with respect to its Class A common stock. The Note Hedges are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2023 Notes, approximately 7.1 million shares of its Class A common stock for approximately $48.36 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2023 Notes, exercisable upon conversion of the 2023 Notes. The Note Hedges will expire in 2023, if not exercised earlier. The Note Hedges are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2023 Notes under certain circumstances. The Note Hedges are separate transactions and are not part of the terms of the 2023 Notes.

The Company paid an aggregate amount of $80.0 million for the Note Hedges. The amount paid for the Note Hedges was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.

In September 2019 and in June 2020, and in connection with the First Partial Repurchase of 2023 Notes and Second Partial Repurchase of 2023 Notes, the Company terminated Note Hedges corresponding to approximately

4.6 million and 1.4 million shares for cash proceeds of $405.9 million and $195.0 million, respectively. The proceeds were recorded as an increase to Additional paid-in capital in the consolidated balance sheets.

During the year ended January 31, 2021, the Company exercised and net-share-settled a portion of the Note Hedges, corresponding to approximately $10.4 million principal amount of 2023 Notes and received approximately 0.2 million shares of Class A common stock and an immaterial cash payment. As of January 31, 2021, Note Hedges giving the Company the option to purchase approximately 0.8 million shares (subject to adjustment) remained outstanding.

Warrants

In connection with the issuance of the 2023 Notes, the Company also entered into separate warrant transactions pursuant to which it sold net-share-settled (or, at the Company’s election subject to certain conditions, cash-settled) warrants to acquire, subject to anti-dilution adjustments, up to approximately 7.1 million shares over 80 scheduled trading days beginning in May 2023 of the Company’s Class A common stock at an initial exercise price of approximately $68.06 per share (subject to adjustment). If the Warrants are not exercised on their exercise dates, they will expire. If the market value per share of the Company’s Class A common stock exceeds the applicable exercise price of the Warrants, the Warrants could have a dilutive effect on the Company’s Class A common stock unless, subject to the terms of the Warrants, the Company elects to cash settle the Warrants. The Warrants are separate transactions and are not part of the terms of the 2023 Notes or the Note Hedges.

The Company received aggregate proceeds of $52.4 million from the sale of the Warrants in connection with the 2023 Notes. The proceeds from the sale of the Warrants were recorded as an increase to Additional paid-in capital in the consolidated balance sheets.

In September 2019 and in June 2020, and in connection with the First Partial Repurchase of 2023 Notes and Second Partial Repurchase of 2023 Notes, the Company terminated Warrants corresponding to approximately 4.6 million and 1.4 million shares for total cash payments of $358.6 million and $175.4 million, respectively. The termination payments were recorded as a decrease to Additional paid-in capital in the consolidated balance sheets.

As of January 31, 2021, Warrants to acquire up to approximately 1.0 million shares (subject to adjustment) remained outstanding.

2025 Convertible Senior Notes

The 2025 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.125% per year. Interest is payable in cash semi-annually in arrears on March 1 and September 1 of each year, beginning on March 1, 2020. The 2025 Notes mature on September 1, 2025 unless earlier redeemed, repurchased or converted. The total net proceeds from the 2025 Notes, after deducting initial purchasers’ discounts and debt issuance costs, were $1,040.7 million.

The terms of the 2025 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2025 Indenture). Upon conversion, the 2025 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.

The 2025 Notes are convertible at an initial conversion rate of 5.2991 shares of Class A common stock per $1,000 principal amount of the 2025 Notes, which is equal to an initial conversion price of approximately $188.71 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the 2025 Indenture. Prior to the close of business on the business day immediately preceding June 1, 2025, holders of the 2025 Notes may convert all or a portion of their 2025 Notes only in multiples of $1,000 principal amount, under the following circumstances:

•during any fiscal quarter commencing after the fiscal quarter ending on January 31, 2020 (and only during such fiscal quarter), if the last reported sale price of Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2025 Notes on each applicable trading day;

•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2025 Notes for each trading day of that five consecutive

trading day period was less than 98% of the product of the last reported sale price of Class A common stock and the conversion rate on such trading day;

•if the Company calls the notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

•upon the occurrence of specified corporate events, as described in the 2025 Indenture.

On or after June 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2025 Notes regardless of the foregoing circumstances. For at least 20 trading days during the period of 30 consecutive trading days ended January 31, 2021, the last reported sale price of the Company’s common stock was equal to or exceeded 130% of the conversion price of the 2025 Notes on each applicable trading day. As a result, the 2025 Notes are convertible at the option of the holders during the fiscal quarter ending April 31, 2021 and were classified as current liabilities on the consolidated balance sheet as of January 31, 2021. No requests to convert material amounts of notes are currently outstanding.

The Company may redeem for cash all or any portion of the 2025 Notes, at its option, on or after September 6, 2022, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on and including the trading day preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date. During the year ended January 31, 2021, the Company did not redeem any of the 2025 Notes.

Holders of the 2025 Notes who convert their 2025 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the 2025 Indenture) or in connection with the Company’s issuance of a redemption notice are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the Indenture), holders of the 2025 Notes may require the Company to repurchase all or a portion of their 2025 Notes at a price equal to 100% of the principal amount of the 2025 Notes being repurchased, plus any accrued and unpaid interest.

In accounting for the issuance of the 2025 Notes, the Company separated the 2025 Notes into liability and equity components using an effective interest rate of 4.10% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility and the risk-free rate. For the market approach, the Company performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):


	Year Ended January 31,
	2021		2020
Contractual interest expense	$	1,325	$	519
Amortization of debt issuance costs	2,097		769
Amortization of debt discount	33,932		12,919
Total	$	37,354	$	14,207

Total issuance costs of $19.3 million related to the 2025 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2025 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company recorded liability issuance costs of $15.3 million and equity issuance costs of $4.0 million.

The 2025 Notes, net consisted of the following (in thousands):


	As of January 31, 2021
Liability component:
Principal	$	1,060,000
Less: unamortized debt issuance costs and debt discount	(186,971)
Net carrying amount	$	873,029

Equity component:	At Issuance
2025 Notes	$	221,387
Less: issuance costs	(4,040)
Carrying amount of the equity component(1)	$	217,347

(1) Included in the consolidated balance sheets within Additional paid-in capital.

2025 Capped Calls

In connection with the pricing of the 2025 Notes, the Company entered into capped call transactions with respect to its Class A common stock. The 2025 Capped Calls are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2025 Notes, approximately 5.6 million shares of its Class A common stock for approximately $188.71 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2025 Notes, exercisable upon conversion of the 2025 Notes. The 2025 Capped Calls have initial cap prices of $255.88 per share (subject to adjustment) and will expire in 2025, if not exercised earlier. The 2025 Capped Calls are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2025 Notes under certain circumstances. The 2025 Capped Calls are separate transactions and are not part of the terms of the 2025 Notes.

The Company paid an aggregate amount of $74.1 million for the 2025 Capped Calls. The amount paid for the 2025 Capped Calls was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.

2026 Convertible Senior Notes

The 2026 Notes are senior, unsecured obligations of the Company, and bear interest at a fixed rate of 0.375% per year. Interest is payable in cash semi-annually in arrears on June 15 and December 15 of each year, beginning on December 15, 2020. The 2026 Notes mature on June 15, 2026 unless earlier redeemed, repurchased or converted. The total net proceeds from the 2026 Notes, after deducting initial purchasers’ discounts and debt issuance costs, were $1,134.8 million.

The terms of the 2026 Notes are governed by an Indenture by and between the Company and Wilmington Trust, National Association, as Trustee (the 2026 Indenture, and together with the 2023 Indenture and 2025 Indenture, the Indentures). Upon conversion, the 2026 Notes may be settled in cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election.

The 2026 Notes are convertible at an initial conversion rate of 4.1912 shares of Class A common stock per $1,000 principal amount of the 2026 Notes, which is equal to an initial conversion price of approximately $238.60 per share of Class A common stock, subject to adjustment under certain circumstances in accordance with the terms of the Indenture. Prior to the close of business on the business day immediately preceding March 15, 2026, holders of the 2026 Notes may convert all or a portion of their 2026 Notes only in multiples of $1,000 principal amount, under the following circumstances:

•during any fiscal quarter commencing after the fiscal quarter ending on October 31, 2020 (and only during such fiscal quarter), if the last reported sale price of our Class A common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2026 Notes on each applicable trading day;

•during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2026 Notes for each trading day of that five consecutive trading day period was less than 98% of the product of the last reported sale price of our Class A common stock and the conversion rate on such trading day;

•if the Company calls the notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

•upon the occurrence of specified corporate events, as described in the 2026 Indenture.

On or after March 15, 2026 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their 2026 Notes regardless of the foregoing circumstances. During the year ended January 31, 2021, the conditions allowing holders of the 2026 Notes to convert were not met.

The Company may redeem for cash all or any portion of the 2026 Notes, at its option, on or after June 20, 2023, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including the trading day immediately preceding the date on which we provide notice of redemption, during any 30 consecutive trading day period ending on and including the trading day preceding the date on which we provide notice of redemption price equal to 100% of the principal amount of the notes to be redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date. During the year ended January 31, 2021, the Company did not redeem any of the 2026 Notes.

Holders of the 2026 Notes who convert their 2026 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the Indenture) or in connection with the Company’s issuance of a redemption notice are, under certain circumstances, entitled to an increase in the conversion rate. Additionally, in the event of a corporate event that constitutes a fundamental change (as defined in the Indenture), holders of the 2026 Notes may require the Company to repurchase all or a portion of their 2026 Notes at a price equal to 100% of the principal amount of the 2026 Notes being repurchased, plus any accrued and unpaid interest.

In accounting for the issuance of the 2026 Notes, the Company separated the 2026 Notes into liability and equity components using an effective interest rate of 5.75% to determine the fair value of the liability component. This interest rate was based on both an income and a market based approach. For the income approach, the Company used a convertible bond pricing model, which included several assumptions including volatility, the risk-free rate and observable trading activity for the Company’s existing Notes. For the market approach, the Company performed an evaluation of issuances of convertible debt securities by other companies with similar credit risk ratings at the time of issuance. The following table sets forth total interest expense recognized related to the 2026 Notes (in thousands):


	Year Ended
		January 31, 2021

Contractual interest expense		$	2,731
Amortization of debt issuance costs		813
Amortization of debt discount		27,954
Total		$	31,498

Total issuance costs of $15.2 million related to the 2026 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component are being amortized to interest expense over the respective term of the 2026 Notes using the effective interest rate method. The issuance costs attributable to the equity component were netted against the respective equity component in Additional paid-in capital. The Company recorded liability issuance costs of $11.1 million and equity issuance costs of $4.1 million.

The 2026 Notes, net consisted of the following (in thousands):


	As of January 31, 2021

Liability component:
Principal	$	1,150,000
Less: unamortized debt issuance costs and debt discount	(292,613)
Net carrying amount	$	857,387

	At Issuance

Equity component:
2026 Notes	$	310,311
Less: issuance costs	(4,090)
Carrying amount of the equity component(1)	$	306,221

(1) Included in the consolidated balance sheets within Additional paid-in capital.

2026 Capped Calls

In connection with the pricing of the 2026 Notes, the Company entered into capped call transactions with respect to its Class A common stock. The 2026 Capped Calls are purchased call options that give the Company the option to purchase, subject to anti-dilution adjustments substantially identical to those in the 2026 Notes, approximately 4.8 million shares of its Class A common stock for approximately $238.60 per share (subject to adjustment), corresponding to the approximate initial conversion price of the 2026 Notes, exercisable upon conversion of the 2026 Notes. The 2026 Capped Calls have initial cap prices of $360.14 per share (subject to adjustment) and will expire in 2026, if not exercised earlier. The 2026 Capped Calls are intended to offset potential dilution to the Company’s Class A common stock and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion of the 2026 Notes under certain circumstances. The 2026 Capped Calls are separate transactions and are not part of the terms of the 2026 Notes.

The Company paid an aggregate amount of $134.0 million for the 2026 Capped Calls. The amount paid for the 2026 Capped Calls was recorded as a reduction to Additional paid-in capital in the consolidated balance sheets.

Leases

12 Months Ended

Jan. 31, 2021

Leases [Abstract]

Leases

The Company has entered into various non-cancellable office space operating leases with original lease periods expiring between 2021 and 2028. These leases do not contain material variable rent payments, residual value guarantees, covenants or other restrictions. The Company's corporate headquarters lease in San Francisco has a 10 year term, which expires in October 2028. The Company is entitled to two five-year options to extend this lease, subject to certain requirements.

Operating lease costs were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Operating lease costs(1)	$	33,076	$	23,193	$	23,290

(1) Amounts are presented exclusive of sublease income and include short-term leases, which are immaterial.

The weighted-average remaining term of the Company’s operating leases was 6.8 and 7.9 years and the weighted-average discount rate used to measure the present value of the operating lease liabilities was 5.6% and 5.7% as of January 31, 2021 and January 31, 2020, respectively.

Maturities of the Company’s operating lease liabilities, which do not include short-term leases, as of January 31, 2021 were as follows (in thousands):


	Operating Leases
2022	$	34,410
2023	37,910
2024	38,823
2025	36,289
2026	26,839
Thereafter	73,135
Total lease payments	247,406
Less imputed interest	(44,279)
Total operating lease liabilities	$	203,127

Cash payments included in the measurement of the Company’s operating lease liabilities were $31.1 million and $18.3 million for the years ended January 31, 2021 and January 31, 2020, respectively.

The Company recorded an impairment charge for operating lease right-of-use assets of $3.1 million and nil for the years ended January 31, 2021 and January 31, 2020, respectively.

Commitments and Contingencies

12 Months Ended

Jan. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Letters of Credit

In conjunction with the execution of certain office space operating leases, letters of credit in the aggregate amount of $11.2 million and $11.9 million were issued and outstanding as of January 31, 2021 and 2020, respectively. No draws have been made under such letters of credit.

Purchase Obligations

As of January 31, 2021, future minimum purchase obligations, such as data center operations and sales and marketing activities, were as follows (in thousands):


	Purchase Obligations
2022	$	53,992
2023	38,370
2024	32,844
2025	1,604
2026	1,417

Total contractual obligations	$	128,227

Legal Matters

From time to time in the normal course of business, the Company may be subject to various legal matters such as threatened or pending claims or proceedings. There were no such material matters as of January 31, 2021 and 2020.

Warranties and Indemnification

The Company’s subscription services are generally warranted to perform materially in accordance with the Company’s online help documentation under normal use and circumstances. Additionally, the Company’s arrangements generally include provisions for indemnifying customers against liabilities if its subscription services infringe a third party’s intellectual property rights. Furthermore, the Company may also incur liabilities if it breaches the security or confidentiality obligations in its arrangements. To date, the Company has not incurred significant costs and has not accrued a liability in the accompanying consolidated financial statements as a result of these obligations.

The Company has entered into service-level agreements with a majority of its customers defining levels of uptime reliability and performance and permitting certain customers to receive credits for paid amounts related to subscription services when the Company fails to meet the defined levels of uptime. In very limited instances, the Company allows customers to early terminate their agreements in the event that the Company fails to meet those

levels as they may constitute a breach of contract. If the customer did terminate, they would receive a refund of prepaid unused subscription fees. To date, the Company has not experienced any significant failures to meet defined levels of uptime reliability and performance as a result of those agreements and, as a result, the Company has not accrued any liabilities related to these agreements in the consolidated financial statements.

Common Stock and Stockholders' Equity

12 Months Ended

Jan. 31, 2021

Equity [Abstract]

Common Stock and Stockholders' Equity

Common Stock

Holders of Class A and Class B common stock are entitled to one vote per share and 10 votes per share, respectively, and the shares of Class A common stock and Class B common stock are identical, except for voting and conversion rights. Shares of Class B common stock may be converted into Class A common stock at any time at the option of the stockholder on a one-for-one basis, and are automatically converted into Class A common stock upon sale or transfer, subject to certain limited exceptions. Shares of Class A common stock are not convertible.

In September 2019 and June 2020, in connection with the 2023 Notes Partial Repurchases, the Company issued approximately 3.0 million and 1.4 million shares of Class A common stock, respectively. In addition, during the year ended January 31, 2021, the Company issued approximately 0.2 million shares of Class A common stock in connection with 2023 Notes conversion requests and received approximately 0.2 million shares of Class A common stock from the settlement of Note Hedges. See Note 9 for additional details.

As of January 31, 2021, shares of common stock reserved for future issuance were as follows:


			As of January 31, 2021
Options and unvested RSUs outstanding			12,702,220
Available for future stock option and RSU grants			20,574,441
Available for ESPP			4,633,093
			37,909,754

Awards Issued as Charitable Contributions

During the years ended January 31, 2021, 2020 and 2019, the Company issued 42,500, 15,000 and 20,000 shares, respectively, of Class A common stock as charitable contributions and recognized $9.3 million, $1.7 million and $1.0 million, respectively, as general and administrative expense in the consolidated statements of operations.

Employee Incentive Plans

12 Months Ended

Jan. 31, 2021

Share-based Payment Arrangement [Abstract]

Employee Incentive Plans

The Company’s equity incentive plans provide for granting stock options, RSUs and restricted stock awards to employees, consultants, officers and directors. In addition, the Company offers an ESPP to eligible employees.

Stock-based compensation expense by award type was as follows (in thousands):


	Year Ended January 31,
		2021		2020		2019
Stock options		$	21,371	$	21,888	$	23,466
RSUs		164,412		94,637		41,637
ESPP		10,373		9,408		7,248
Restricted stock awards		25		590		1,608
Restricted common stock		—		101		2,361
Total		$	196,181	$	126,624	$	76,320

Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s consolidated statements of operations (in thousands):


	Year Ended January 31,
	2021		2020		2019
Cost of revenue:
Subscription	$	21,895	$	12,923	$	7,837
Professional services and other	8,083		7,164		4,983
Research and development	63,270		37,683		22,642
Sales and marketing	53,802		38,077		22,916
General and administrative	49,131		30,777		17,942
Total	$	196,181	$	126,624	$	76,320

Equity Incentive Plans

The Company has two equity incentive plans: the 2009 Stock Plan (2009 Plan) and the 2017 Equity Incentive Plan (2017 Plan). All shares that remain available for future grants are under the 2017 Plan. As of January 31, 2021, options to purchase 1,074,212 shares of Class A common stock and 7,175,901 shares of Class B common stock remained outstanding.

Stock Options

Options issued under the Plan generally are exercisable for periods not to exceed ten years and generally vest over four years with 25% vesting after one year and with the remainder vesting monthly thereafter in equal installments. Shares offered under the Plan may be: (i) authorized but unissued shares or (ii) treasury shares.

A summary of the Company’s stock option activity and related information was as follows:


	Number of Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in thousands)
















Outstanding as of January 31, 2020	12,359,302	$	11.82	6.2	$	1,436,487
Granted	402,891	145.08
Exercised	(4,368,683)	10.44
Canceled	(143,397)	19.23
Outstanding as of January 31, 2021	8,250,113	$	18.93	5.6	$	1,980,668
As of January 31, 2021
Vested and expected to vest	8,250,113	$	18.93	5.6	$	1,980,668
Vested and exercisable	6,818,491	$	9.93	5.2	$	1,698,330

The weighted-average grant-date fair value of options granted was $63.32, $37.35 and $17.21 during the years ended January 31, 2021, 2020 and 2019, respectively. The total grant-date fair value of stock options vested was $19.7 million, $23.7 million and $23.8 million during the years ended January 31, 2021, 2020 and 2019, respectively. The intrinsic value of the options exercised, which represents the difference between the fair market value of the Company’s common stock on the date of exercise and the exercise price of each option, was $772.3 million, $558.6 million and $309.3 million for the years ended January 31, 2021, 2020 and 2019, respectively.

As of January 31, 2021 and January 31, 2020, there was a total of $31.1 million and $28.2 million, respectively, of unrecognized stock-based compensation expense related to options, which was being recognized over a weighted-average period of 1.4 years.

The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:


	Year Ended January 31,
	2021		2020		2019
Expected volatility	45	%	43	%	40	%
Expected term (in years)	6.3		6.3		6.3
Risk-free interest rate	0.37% - 0.44%		1.55% - 2.27%		2.70	%
Expected dividend yield	—		—		—

Restricted Stock Units

A summary of the Company’s RSU activities and related information is as follows:


	Number of RSUs	Weighted- Average Grant Date Fair Value Per Share
Outstanding as of January 31, 2020	4,893,241	$	77.99
Granted	2,198,704	173.64
Vested	(2,195,094)	80.28
Forfeited	(444,744)	90.01
Outstanding as of January 31, 2021	4,452,107	$	122.90

The Company granted 2,198,704 RSUs with an aggregate fair value of $381.8 million for the year ended January 31, 2021. As of January 31, 2021, there was $502.8 million of unrecognized stock-based compensation expense related to unvested RSUs, which is being recognized over a weighted-average period of 2.5 years based on vesting under the award service conditions. The total fair value of RSUs vested during fiscal 2021, 2020 and 2019 was $410.4 million, $193.9 million and $58.7 million, respectively.

Employee Stock Purchase Plan

The ESPP provides for 12-month offering periods beginning June 21 and December 21 of each year, and each offering period consists of up to two six-month purchase periods.

The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:


	Year Ended January 31,
	2021	2020	2019
Expected volatility	48% - 54%	43% - 59%	39% - 70%
Expected term (in years)	0.5 - 1.0	0.5 - 1.0	0.5 - 1.0
Risk-free interest rate	0.09% - 0.18%	1.53% - 2.05%	2.12% - 2.62%
Expected dividend yield	—	—	—

During the year ended January 31, 2021, the Company's employees purchased 247,142 shares of its Class A common stock under the ESPP. The shares were purchased at a weighted-average purchase price of $104.84, with proceeds of $25.9 million. During the year ended January 31, 2020, the Company's employees purchased 322,795 shares of its Class A common stock under the ESPP. The shares were purchased at a weighted-average purchase price of $58.14 with proceeds of $18.8 million.

As of January 31, 2021, there was $10.1 million of unrecognized stock-based compensation expense related to the ESPP that is expected to be recognized over an average vesting period of 0.9 years.

Income Taxes

12 Months Ended

Jan. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

The domestic and foreign components of pre-tax loss for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Domestic	$	(282,026)	$	(220,846)	$	(128,214)
Foreign	15,835		10,514		2,700
Loss before provision for (benefit from) income taxes	$	(266,191)	$	(210,332)	$	(125,514)

The components of the provision for (benefit from) income taxes for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Current:
Federal	$	11	$	33	$	—
State	136		86		61
Foreign	1,294		822		667
Total current provision for income taxes	1,441		941		728
Deferred:
Federal	51		(518)		(620)
State	5		(406)		(130)
Foreign	(1,356)		(1,436)		5
Total deferred benefit from income taxes	(1,300)		(2,360)		(745)
Total provision for (benefit from) income taxes	$	141	$	(1,419)	$	(17)

For the tax year ended January 31, 2021, the income tax expense from profitable jurisdictions was partially offset by the excess tax benefits from stock-based compensation in the United Kingdom. For the tax year ended January 31, 2020 the income tax benefit resulted from the release of valuation allowance in the United States in connection with an acquisition and excess tax benefits from stock-based compensation in the United Kingdom. For the tax year ended January 31, 2019, the income tax benefit resulted from the release of valuation allowance in the United States in connection with an acquisition and excess tax benefits from stock-based compensation in the United Kingdom. The income tax expense and benefits in the years ended January 31, 2021, 2020 and 2019 were partially offset by foreign income taxes, state taxes and tax amortization of goodwill.

The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended January 31, 2021, 2020 and 2019:


	Year Ended January 31,
	2021		2020		2019
Tax at federal statutory rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal benefit	4.1		4.0		3.8
Change in valuation allowance	(101.0)		(100.1)		(68.5)
Stock-based compensation	70.2		59.8		45.5
Research and development credits	6.4		18.0		—

Other, net	(0.8)		(2.0)		(1.8)
Effective tax rate	(0.1)	%	0.7	%	—	%

The tax effects of temporary differences and related deferred tax assets and liabilities as of January 31, 2021 and 2020 were as follows (in thousands):


	As of January 31,
	2021		2020

Deferred tax assets:
Net operating loss carryforwards	$	607,483	$	370,705
Stock-based compensation	18,952		18,680
Deferred revenue	1,144		1,960
Operating lease liabilities	51,702		42,073
Other reserves and accruals	16,586		6,414
Research and development and other credits	57,060		39,918
Disallowed interest	6,091		4,507
Total deferred tax assets	759,018		484,257
Valuation allowance	(555,199)		(361,606)
Total deferred tax assets, net	203,819		122,651
Deferred tax liabilities:
Convertible debt	(112,547)		(50,963)
Deferred commissions	(38,710)		(27,569)
Capitalized internal-use software costs	(2,691)		(2,248)
Goodwill	(306)		(262)
Operating lease right-of-use assets	(37,522)		(31,165)
Depreciation and amortization	(8,522)		(8,315)
Total deferred tax liabilities	(200,298)		(120,522)
Net deferred tax assets	$	3,521	$	2,129

As a result of continuing losses, the Company has determined that it is not more likely than not that it will realize the benefits of the U.S. deferred tax assets and, therefore, the Company has recorded a valuation allowance to reduce the carrying value of the U.S. deferred tax assets, net of U.S. deferred tax liabilities, to approximately zero. The U.S. valuation allowance increased by $193.6 million and $157.7 million during the years ended January 31, 2021 and 2020, respectively.

As of January 31, 2021, the Company had approximately $2,390.3 million of federal and $1,541.9 million of state net operating loss carryforwards available to offset future taxable income. If not used, the federal and state net operating loss carryforwards will begin to expire in 2029 and 2022, respectively. As of January 31, 2021, the Company had approximately $49.4 million of UK net operating losses which do not expire.

As of January 31, 2021, the Company had federal research and development tax credit carryforwards of $50.3 million and California research and development tax credit carryforwards of $33.4 million. The federal research and development credits will start to expire in 2030 while the California research and development credits do not expire. The Company also had California Enterprise Zone credits of $1.0 million that begin to expire in 2023.

The Company’s ability to use the net operating loss and tax credit carryforwards in the future may be subject to substantial restrictions in the event of past or future ownership changes as defined in Section 382 of the Internal Revenue Code and similar state tax laws.

The Company attributes net revenue, costs and expenses to domestic and foreign components based on the terms of its agreements with its subsidiaries. The Company does not provide for federal income taxes on the undistributed earnings of its foreign subsidiaries as such earnings are to be reinvested offshore indefinitely. If the Company repatriated these earnings, the resulting income tax liability would be insignificant. The Company is subject to taxation in the United States and various states and foreign jurisdictions.

On March 27, 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (the CARES Act). The CARES Act provides numerous tax provisions and other stimulus measures, including temporary changes regarding the prior and future use of net operating losses, temporary changes to the prior and future

limitations on interest deductions, temporary suspension of certain payment requirements for the employer portion of Social Security taxes, technical corrections from prior tax legislation for tax depreciation of certain qualified improvement property, and the creation of certain refundable employee retention credits. The Company does not expect there to be a material tax impact on its consolidated financial statements at this time, and will continue to assess the implications of the CARES Act and its continuing developments and interpretations.

A reconciliation of beginning and ending amount of unrecognized tax benefit was as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Gross amount of unrecognized tax benefits as of the beginning of the year	$	15,987	$	23,931	$	11,719
Additions based on tax positions related to a prior year	—		658		1,859
Additions based on tax positions related to current year	7,189		6,866		10,353
Reductions based on tax positions taken in a prior year	(952)		(15,468)		—
Gross amount of unrecognized tax benefits as of the end of the year	$	22,224	$	15,987	$	23,931

The Company is subject to taxation in the U.S. and various other state and foreign jurisdictions. As the Company has net operating loss carryforwards for U.S. federal and state jurisdictions, the statute of limitations is open for all years. For material foreign jurisdictions, the tax years open to examination include the tax years 2016 and forward.

As of January 31, 2021, 2020 and 2019, the Company had unrecognized tax benefits which would not impact the effective tax rate because of the valuation allowance. The Company's policy is to include interest and penalties related to unrecognized tax benefits within the provision for income taxes. The Company did not have any uncertain tax positions as of January 31, 2021 for which it was reasonably possible that the positions will increase or decrease within the next twelve months. As of January 31, 2021 and 2020, the Company had not accrued any interest or penalties related to unrecognized tax benefits.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Net Loss Per Share

12 Months Ended

Jan. 31, 2021

Earnings Per Share [Abstract]

Net Loss Per Share

The Company computes net loss per share of common stock in conformity with the two-class method required for participating securities.

The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):


	Year Ended January 31,
	2021				2020				2019
	Class A		Class B		Class A		Class B		Class A		Class B
Numerator:
Net loss	$	(248,892)	$	(17,440)	$	(192,138)	$	(16,775)	$	(107,926)	$	(17,571)
Denominator:
Weighted-average shares outstanding, basic and diluted	118,882		8,330		107,809		9,412		92,452		15,052
Net loss per share, basic and diluted	$	(2.09)	$	(2.09)	$	(1.78)	$	(1.78)	$	(1.17)	$	(1.17)

As the Company was in a loss position for all periods presented, basic net loss per share is the same as diluted net loss per share as the inclusion of all potential common shares outstanding would have been anti-dilutive. Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands):


	Year Ended January 31,
	2021	2020	2019
Issued and outstanding stock options	8,250	12,359	17,804
Unvested RSUs issued and outstanding	4,452	4,893	4,836
Unvested restricted stock awards issued and outstanding	—	177	388
Unvested shares subject to repurchase	—	5	48
Unvested restricted common stock issued and outstanding	—	—	400
Shares committed under the ESPP	137	253	271
Shares related to 2023 Notes	832	2,494	7,134
Shares subject to warrants related to the issuance of 2023 Notes	1,048	2,494	—
Shares related to 2025 Notes	5,617	5,617	—
Shares related to 2026 Notes	4,820	—	—


	25,156	28,292	30,881

The Company uses the if-converted method for calculating any potential dilutive effect of the conversion options embedded in the Notes on diluted net income per share, if applicable. The conversion options of the 2023, 2025 and 2026 Notes are dilutive in periods of net income on a weighted-average basis using an assumed conversion date equal to the later of the beginning of the reporting period and the date of issuance of the respective Notes. The exercise rights of the Warrants will have a dilutive impact on net income per share of common stock under the treasury-stock method when the average market price per share of the Company’s Class A common stock for a given period exceeds the conversion price of $68.06 per share. During the year ended January 31, 2021, the average price per share of the Company’s Class A common stock exceeded the exercise price of the Warrants; however, since the Company is in a net loss position there was no dilutive effect during any period presented.

Subsequent Events	12 Months Ended
Subsequent Events	Jan. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On March 3, 2021, the Company entered into a definitive agreement to acquire Auth0, an identity management platform, pursuant to the Merger Agreement. Upon consummation of the transaction contemplated by the Merger Agreement, all outstanding shares of Auth0 capital stock, options, warrants, convertible securities, phantom equity and other outstanding equity interests will be cancelled in exchange for aggregate consideration of $6.5 billion in the form of shares of Class A common stock of the Company and assumed awards of corresponding Company equity interests, subject to customary purchase price adjustments and certain customary cash payouts in lieu of shares of Company Class A common stock, as provided by the Merger Agreement. The purchase price payable in shares of Class A common stock will be valued at $276.2147 per share (which price was calculated based on the daily volume-weighted average sales price per share of Company Class A common stock for the 20 trading days ending on February 26, 2021). The per share price of these shares has been fixed as of the Merger Agreement signing date, and the aggregate value of these shares will fluctuate based on changes in our share price between the signing and closing dates. The proposed transaction is expected to close during the Company’s second quarter of fiscal 2022, the quarter ending July 31, 2021. The closing of this transaction is subject to certain customary closing conditions and approvals.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jan. 31, 2021

Accounting Policies [Abstract]

Basis of Presentation

The accompanying consolidated financial statements, which include the accounts of the Company and its wholly owned subsidiaries, have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP).

Principles of Consolidation

All intercompany balances and transactions have been eliminated in consolidation.

Fiscal Period

The Company’s fiscal year ends on January 31. References to fiscal 2021, for example, refer to the fiscal year ended January 31, 2021.

Use of Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The Company bases its estimates on historical experience and on other assumptions that its management believes are reasonable under the circumstances. Actual results could vary from those estimates. The Company’s most significant estimates include the SSP for each distinct performance obligation included in customer contracts with multiple performance obligations, the determination of the period of benefit for deferred commissions, the determination of the effective interest rate of the liability components of its convertible senior notes, the determination of the incremental borrowing rate used for operating lease liabilities, the valuation of deferred income tax assets and the valuation of acquired intangible assets.

In March 2020, the World Health Organization (WHO) declared the outbreak of the novel coronavirus, COVID-19, a pandemic, which continues to spread across the globe. The Company considered the impact of COVID-19 on the assumptions and estimates used and determined that there were no material adverse impacts on the consolidated financial statements for the year ended January 31, 2021. As events continue to evolve and additional information becomes available, our assumptions and estimates may change materially in future periods.

Foreign Currency

The functional currencies of the Company’s foreign subsidiaries are the respective local currencies. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive loss within the consolidated statements of redeemable convertible preferred stock and stockholders’ equity (deficit). Foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of operations and were not material for the years ended January 31, 2021, 2020 or 2019. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenue and expenses are translated at the average exchange rate during the period, and equity balances are translated using historical exchange rates.

Segment Information

Revenue Recognition, Deferred Revenue and Cost of Revenue

The Company determines revenue recognition through the following steps:

•Identification of the contract, or contracts, with a customer;

•Identification of the performance obligations in the contract;

•Determination of the transaction price;

•Allocation of the transaction price to the performance obligations in the contract; and

•Recognition of revenue when, or as, the Company satisfies a performance obligation.

Subscription Revenue

Professional Services Revenue

Contracts with Multiple Performance Obligations

Deferred revenue consists primarily of payments received and accounts receivable recorded in advance of revenue recognition under the Company’s subscription and support services and professional services arrangements. The Company primarily invoices its customers for its subscription services arrangements annually in advance. The Company’s payment terms generally provide that customers pay the invoiced portion of the total arrangement fee within 30 days of the invoice date. Amounts anticipated to be recognized within one year of the balance sheet date are recorded as deferred revenue, current; the remaining portion is recorded as deferred revenue, noncurrent in the consolidated balance sheets.Costs of revenue primarily consist of costs related to providing the Company’s cloud-based platform to its customers, including third-party hosting fees, amortization of capitalized internal-use software and finite-lived purchased developed technology, customer support, other employee-related expenses for security, technical operations and professional services staff, and allocated overhead costs.

Deferred Commissions

Cash and Cash Equivalents

Short-Term Investments

Accounts Receivable and Allowances

Property and Equipment

The useful lives of property and equipment are as follows:


			Useful lives
Capitalized internal-use software costs			3 years
Computers and equipment			3 years
Furniture and fixtures			7 years
Leasehold improvements			Shorter of estimated useful life or remaining lease term

Business Combinations

Goodwill and Other Long-Lived Assets

The Company amortizes intangible assets with finite lives on a straight-line basis over their estimated useful lives in cost of revenue in the consolidated statements of operations.

Operating Leases and Incremental Borrowing Rate

For short-term leases, the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term and records variable lease payments as incurred.

Convertible Senior Notes

Advertising Expenses

Advertising costs are expensed as incurred.

Income Taxes

The Company recognizes and measures tax benefits from uncertain tax positions using a two-step approach.

Concentrations of Risk and Significant Customers

In order to reduce the risk of downtime of the Company’s subscription services, the Company uses data center facilities operated by a third-party located in Virginia, Oregon, Ohio, Germany, Ireland, Singapore and Sydney. The Company has internal procedures to restore services in the event of disaster at any of its current data center facilities. Even with these procedures for disaster recovery in place, the Company’s subscription services could be significantly interrupted during the time period following a disaster at one of its sites and the subsequent restoration of services at another site.Other than the United States, no individual country exceeded 10% of total revenue for the years ended January 31, 2021, 2020 and 2019. Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of January 31, 2021 and 2020, substantially all of the Company’s property and equipment was located in the United States.

Net Loss per Share

Recently Adopted and Not Yet Adopted Accounting Pronouncements

prospective basis. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

Fair Value Measurement

Three levels of inputs may be used to measure as follows:

Level 1—Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in

active markets.

Level 2—Valuations based on other inputs that are directly or indirectly observable in the marketplace.

Level 3—Valuations based on unobservable inputs that are supported by little or no market activity.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2021

Accounting Policies [Abstract]

Schedule of Property Plant and Equipment Estimated Useful Life

The useful lives of property and equipment are as follows:


			Useful lives
Capitalized internal-use software costs			3 years
Computers and equipment			3 years
Furniture and fixtures			7 years
Leasehold improvements			Shorter of estimated useful life or remaining lease term

Property and equipment consisted of the following (in thousands):


	As of January 31,
	2021		2020
Computers and equipment	$	1,242	$	3,567
Furniture and fixtures	13,948		11,014
Leasehold improvements	69,862		55,363
Property and equipment, gross	85,052		69,944
Less accumulated depreciation	(22,269)		(16,409)
Property and equipment, net	$	62,783	$	53,535

Schedule of Revenue by Geographic Area

The following table sets forth revenue by geographic area (in thousands):


	Year Ended January 31,
	2021		2020		2019
United States	$	701,635	$	494,529	$	337,367
International	133,789		91,538		61,887
Total	$	835,424	$	586,067	$	399,254

Cash Equivalents and Short-term Investments (Tables)

12 Months Ended

Jan. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Costs, Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Short-term Investments

The amortized cost, unrealized gain (loss) and estimated fair value of the Company’s cash equivalents and short-term investments as of January 31, 2021 and 2020 were as follows (in thousands):


	As of January 31, 2021
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	311,257	$	—	$	—	$	311,257



Total cash equivalents	311,257		—		—		311,257
Short-term investments:


U.S. treasury securities	1,888,882		1,571		(22)		1,890,431
Corporate debt securities	230,726		429		(2)		231,153
Total short-term investments	2,119,608		2,000		(24)		2,121,584
Total	$	2,430,865	$	2,000	$	(24)	$	2,432,841


	As of January 31, 2020
	Amortized Cost		Unrealized Gain		Unrealized Loss		Estimated Fair Value
Cash equivalents:
Money market funds	$	416,584	$	—	$	—	$	416,584
U.S. treasury securities	19,996		—		—		19,996
Total cash equivalents	436,580		—		—		436,580
Short-term investments:


U.S. treasury securities	575,920		686		(8)		576,598
Corporate debt securities	305,859		519		—		306,378
Total short-term investments	881,779		1,205		(8)		882,976
Total	$	1,318,359	$	1,205	$	(8)	$	1,319,556

Schedule of Contractual Maturities of Short-term Investments

The following table presents the contractual maturities of the Company's short-term investments as of January 31, 2021 and 2020 (in thousands):


	As of January 31, 2021
	Amortized Cost		Estimated Fair Value
Due within one year	$	1,509,241	$	1,510,810
Due between one to five years	610,367		610,774
Total	$	2,119,608	$	2,121,584

Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents information about the Company’s financial assets that were measured at fair value on a recurring basis using the above input categories (in thousands):


	As of January 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	311,257	$	—	$	—	$	311,257



Total cash equivalents	311,257		—		—		311,257
Short-term investments:


U.S. treasury securities	—		1,890,431		—		1,890,431
Corporate debt securities	—		231,153		—		231,153
Total short-term investments	—		2,121,584		—		2,121,584
Total cash equivalents and short-term investments	$	311,257	$	2,121,584	$	—	$	2,432,841


	As of January 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	416,584	$	—	$	—	$	416,584
U.S. treasury securities	—		19,996		—		19,996
Total cash equivalents	416,584		19,996		—		436,580
Short-term investments:


U.S. treasury securities	—		576,598		—		$	576,598
Corporate debt securities	—		306,378		—		306,378
Total short-term investments	—		882,976		—		882,976
Total cash equivalents and short-term investments	$	416,584	$	902,972	$	—	$	1,319,556

Schedule of Carrying Amounts and Estimated Fair Values of Convertible Note

The following table presents the carrying amounts and estimated fair values of our financial instruments that are not recorded at fair value on the consolidated balance sheets (in thousands):


	As of January 31, 2021
	Net Carrying Amount(1)		Estimated Fair Value
2023 convertible senior notes	$	36,092	$	216,926
2025 convertible senior notes	$	885,465	$	1,605,508
2026 convertible senior notes	$	867,643	$	1,493,850

(1) Before unamortized debt issuance costs.

Goodwill and Intangible Assets, net (Tables)

12 Months Ended

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets, net

Intangible assets consisted of the following (in thousands):


	As of January 31, 2021
	Gross		Accumulated Amortization		Write-offs		Net
Capitalized internal-use software costs	$	30,259	$	(19,478)	$	—	$	10,781
Purchased developed technology	28,800		(12,694)		—		16,106
Software licenses	126		(4)		—		122
	$	59,185	$	(32,176)	$	—	$	27,009


	As of January 31, 2020
	Gross		Accumulated Amortization		Write-offs		Net
Capitalized internal-use software costs	$	24,890	$	(14,828)	$	(119)	$	9,943
Purchased developed technology	28,800		(6,321)		—		22,479
Software licenses	1,112		(1,005)		—		107
	$	54,802	$	(22,154)	$	(119)	$	32,529

Schedule of Estimated Remaining Amortization Expense for Intangible Assets

As of January 31, 2021, estimated remaining amortization expense for the intangible assets by fiscal year was as follows (in thousands):



	Remaining Amortization
2022	$	10,354
2023	8,416
2024	7,354
2025	885


Total	$	27,009

Balance Sheet Components (Tables)

12 Months Ended

Jan. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Property and Equipment, net

The useful lives of property and equipment are as follows:


			Useful lives
Capitalized internal-use software costs			3 years
Computers and equipment			3 years
Furniture and fixtures			7 years
Leasehold improvements			Shorter of estimated useful life or remaining lease term

Property and equipment consisted of the following (in thousands):


	As of January 31,
	2021		2020
Computers and equipment	$	1,242	$	3,567
Furniture and fixtures	13,948		11,014
Leasehold improvements	69,862		55,363
Property and equipment, gross	85,052		69,944
Less accumulated depreciation	(22,269)		(16,409)
Property and equipment, net	$	62,783	$	53,535

Schedule of Allowances

The Company’s accounts receivable allowances for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	As of January 31,
	2021		2020		2019
Balance, beginning of period	$	1,166	$	2,098	$	1,472
Additions (reductions)	3,252		(673)		888
Write-offs	(967)		(259)		(262)
Balance, end of period	$	3,451	$	1,166	$	2,098

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):


	As of January 31,
	2021		2020

Accrued expenses	$	24,717	$	22,530

Accrued taxes payable	2,462		1,591
Operating lease liabilities	23,403		12,064
Other	3,147		702
Accrued expenses and other current liabilities	$	53,729	$	36,887

Schedule of Other Liabilities, noncurrent

Other liabilities, noncurrent consisted of the following (in thousands):


	As of January 31,
	2021		2020


Deferred tax liabilities	$	3,877	$	1,558
Other	7,498		3,803
Other liabilities, noncurrent	$	11,375	$	5,361

Convertible Senior Notes, Net (Tables)

12 Months Ended

Jan. 31, 2021

Debt Disclosure [Abstract]

Schedule of Interest Expense

The following table sets forth total interest expense recognized related to the 2023 Notes (in thousands):


	Year Ended January 31,
	2021		2020
Contractual interest expense	$	180	$	606
Amortization of debt issuance costs	312		985
Amortization of debt discount	3,316		11,219
Total	$	3,808	$	12,810

The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):


	Year Ended January 31,
	2021		2020
Contractual interest expense	$	1,325	$	519
Amortization of debt issuance costs	2,097		769
Amortization of debt discount	33,932		12,919
Total	$	37,354	$	14,207

The following table sets forth total interest expense recognized related to the 2026 Notes (in thousands):


	Year Ended
		January 31, 2021

Contractual interest expense		$	2,731
Amortization of debt issuance costs		813
Amortization of debt discount		27,954
Total		$	31,498

Schedule of Convertible Debt

The 2023 Notes, net consisted of the following (in thousands):


	As of January 31, 2021
Liability component:
Principal	$	40,246
Less: unamortized debt issuance costs and debt discount	(4,591)
Net carrying amount	$	35,655

Equity component:
2023 Notes	$	9,328
Less: issuance costs	(271)
Carrying amount of the equity component(1)	$	9,057

(1) Included in the consolidated balance sheets within Additional paid-in capital.

The 2025 Notes, net consisted of the following (in thousands):


	As of January 31, 2021
Liability component:
Principal	$	1,060,000
Less: unamortized debt issuance costs and debt discount	(186,971)
Net carrying amount	$	873,029

Equity component:	At Issuance
2025 Notes	$	221,387
Less: issuance costs	(4,040)
Carrying amount of the equity component(1)	$	217,347

(1) Included in the consolidated balance sheets within Additional paid-in capital.

The 2026 Notes, net consisted of the following (in thousands):


	As of January 31, 2021

Liability component:
Principal	$	1,150,000
Less: unamortized debt issuance costs and debt discount	(292,613)
Net carrying amount	$	857,387

	At Issuance

Equity component:
2026 Notes	$	310,311
Less: issuance costs	(4,090)
Carrying amount of the equity component(1)	$	306,221

(1) Included in the consolidated balance sheets within Additional paid-in capital.

Leases (Tables)

12 Months Ended

Jan. 31, 2021

Leases [Abstract]

Schedule of Operating Lease Costs

Operating lease costs were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Operating lease costs(1)	$	33,076	$	23,193	$	23,290

(1) Amounts are presented exclusive of sublease income and include short-term leases, which are immaterial.

Schedule of Maturities of Operating Leases

Maturities of the Company’s operating lease liabilities, which do not include short-term leases, as of January 31, 2021 were as follows (in thousands):


	Operating Leases
2022	$	34,410
2023	37,910
2024	38,823
2025	36,289
2026	26,839
Thereafter	73,135
Total lease payments	247,406
Less imputed interest	(44,279)
Total operating lease liabilities	$	203,127

Commitments and Contingencies (Tables)

12 Months Ended

Jan. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule of Purchase Obligations Fiscal Maturity Schedule

As of January 31, 2021, future minimum purchase obligations, such as data center operations and sales and marketing activities, were as follows (in thousands):


	Purchase Obligations
2022	$	53,992
2023	38,370
2024	32,844
2025	1,604
2026	1,417

Total contractual obligations	$	128,227

Common Stock and Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2021

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issuance

As of January 31, 2021, shares of common stock reserved for future issuance were as follows:


			As of January 31, 2021
Options and unvested RSUs outstanding			12,702,220
Available for future stock option and RSU grants			20,574,441
Available for ESPP			4,633,093
			37,909,754

Employee Incentive Plans (Tables)

12 Months Ended

Jan. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense by Award Type

Stock-based compensation expense by award type was as follows (in thousands):


	Year Ended January 31,
		2021		2020		2019
Stock options		$	21,371	$	21,888	$	23,466
RSUs		164,412		94,637		41,637
ESPP		10,373		9,408		7,248
Restricted stock awards		25		590		1,608
Restricted common stock		—		101		2,361
Total		$	196,181	$	126,624	$	76,320

Schedule of Stock-based Compensation Expense by Statement of Operations Location

Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s consolidated statements of operations (in thousands):


	Year Ended January 31,
	2021		2020		2019
Cost of revenue:
Subscription	$	21,895	$	12,923	$	7,837
Professional services and other	8,083		7,164		4,983
Research and development	63,270		37,683		22,642
Sales and marketing	53,802		38,077		22,916
General and administrative	49,131		30,777		17,942
Total	$	196,181	$	126,624	$	76,320

Schedule of Stock Option Activity

A summary of the Company’s stock option activity and related information was as follows:


	Number of Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in thousands)
















Outstanding as of January 31, 2020	12,359,302	$	11.82	6.2	$	1,436,487
Granted	402,891	145.08
Exercised	(4,368,683)	10.44
Canceled	(143,397)	19.23
Outstanding as of January 31, 2021	8,250,113	$	18.93	5.6	$	1,980,668
As of January 31, 2021
Vested and expected to vest	8,250,113	$	18.93	5.6	$	1,980,668
Vested and exercisable	6,818,491	$	9.93	5.2	$	1,698,330

Schedule of Black-Scholes Option Pricing Model Estimated Fair Value Assumptions

The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:


	Year Ended January 31,
	2021		2020		2019
Expected volatility	45	%	43	%	40	%
Expected term (in years)	6.3		6.3		6.3
Risk-free interest rate	0.37% - 0.44%		1.55% - 2.27%		2.70	%
Expected dividend yield	—		—		—

Schedule of Nonvested Restricted Stock Units Activity

A summary of the Company’s RSU activities and related information is as follows:


	Number of RSUs	Weighted- Average Grant Date Fair Value Per Share
Outstanding as of January 31, 2020	4,893,241	$	77.99
Granted	2,198,704	173.64
Vested	(2,195,094)	80.28
Forfeited	(444,744)	90.01
Outstanding as of January 31, 2021	4,452,107	$	122.90

Schedule of ESPP Black-Scholes Option Pricing Model Estimated Fair Value Assumptions

The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:


	Year Ended January 31,
	2021	2020	2019
Expected volatility	48% - 54%	43% - 59%	39% - 70%
Expected term (in years)	0.5 - 1.0	0.5 - 1.0	0.5 - 1.0
Risk-free interest rate	0.09% - 0.18%	1.53% - 2.05%	2.12% - 2.62%
Expected dividend yield	—	—	—

Income Taxes (Tables)

12 Months Ended

Jan. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Domestic and Foreign Components of Pre-tax Loss

The domestic and foreign components of pre-tax loss for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Domestic	$	(282,026)	$	(220,846)	$	(128,214)
Foreign	15,835		10,514		2,700
Loss before provision for (benefit from) income taxes	$	(266,191)	$	(210,332)	$	(125,514)

Schedule of Components of Provision for (Benefit from) Income Taxes

The components of the provision for (benefit from) income taxes for the years ended January 31, 2021, 2020 and 2019 were as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Current:
Federal	$	11	$	33	$	—
State	136		86		61
Foreign	1,294		822		667
Total current provision for income taxes	1,441		941		728
Deferred:
Federal	51		(518)		(620)
State	5		(406)		(130)
Foreign	(1,356)		(1,436)		5
Total deferred benefit from income taxes	(1,300)		(2,360)		(745)
Total provision for (benefit from) income taxes	$	141	$	(1,419)	$	(17)

Schedule of Effective Income Tax Rate Reconciliation

The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended January 31, 2021, 2020 and 2019:


	Year Ended January 31,
	2021		2020		2019
Tax at federal statutory rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal benefit	4.1		4.0		3.8
Change in valuation allowance	(101.0)		(100.1)		(68.5)
Stock-based compensation	70.2		59.8		45.5
Research and development credits	6.4		18.0		—

Other, net	(0.8)		(2.0)		(1.8)
Effective tax rate	(0.1)	%	0.7	%	—	%

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences and related deferred tax assets and liabilities as of January 31, 2021 and 2020 were as follows (in thousands):


	As of January 31,
	2021		2020

Deferred tax assets:
Net operating loss carryforwards	$	607,483	$	370,705
Stock-based compensation	18,952		18,680
Deferred revenue	1,144		1,960
Operating lease liabilities	51,702		42,073
Other reserves and accruals	16,586		6,414
Research and development and other credits	57,060		39,918
Disallowed interest	6,091		4,507
Total deferred tax assets	759,018		484,257
Valuation allowance	(555,199)		(361,606)
Total deferred tax assets, net	203,819		122,651
Deferred tax liabilities:
Convertible debt	(112,547)		(50,963)
Deferred commissions	(38,710)		(27,569)
Capitalized internal-use software costs	(2,691)		(2,248)
Goodwill	(306)		(262)
Operating lease right-of-use assets	(37,522)		(31,165)
Depreciation and amortization	(8,522)		(8,315)
Total deferred tax liabilities	(200,298)		(120,522)
Net deferred tax assets	$	3,521	$	2,129

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of beginning and ending amount of unrecognized tax benefit was as follows (in thousands):


	Year Ended January 31,
	2021		2020		2019
Gross amount of unrecognized tax benefits as of the beginning of the year	$	15,987	$	23,931	$	11,719
Additions based on tax positions related to a prior year	—		658		1,859
Additions based on tax positions related to current year	7,189		6,866		10,353
Reductions based on tax positions taken in a prior year	(952)		(15,468)		—
Gross amount of unrecognized tax benefits as of the end of the year	$	22,224	$	15,987	$	23,931

Net Loss Per Share (Tables)

12 Months Ended

Jan. 31, 2021

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss Per Share

The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):


	Year Ended January 31,
	2021				2020				2019
	Class A		Class B		Class A		Class B		Class A		Class B
Numerator:
Net loss	$	(248,892)	$	(17,440)	$	(192,138)	$	(16,775)	$	(107,926)	$	(17,571)
Denominator:
Weighted-average shares outstanding, basic and diluted	118,882		8,330		107,809		9,412		92,452		15,052
Net loss per share, basic and diluted	$	(2.09)	$	(2.09)	$	(1.78)	$	(1.78)	$	(1.17)	$	(1.17)

Schedule of Potentially Dilutive Securities Excluded from Computation of Diluted Per Share

Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands):


	Year Ended January 31,
	2021	2020	2019
Issued and outstanding stock options	8,250	12,359	17,804
Unvested RSUs issued and outstanding	4,452	4,893	4,836
Unvested restricted stock awards issued and outstanding	—	177	388
Unvested shares subject to repurchase	—	5	48
Unvested restricted common stock issued and outstanding	—	—	400
Shares committed under the ESPP	137	253	271
Shares related to 2023 Notes	832	2,494	7,134
Shares subject to warrants related to the issuance of 2023 Notes	1,048	2,494	—
Shares related to 2025 Notes	5,617	5,617	—
Shares related to 2026 Notes	4,820	—	—


	25,156	28,292	30,881

Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Payment terms for deferred revenue	30 days
Amortization period for capitalized contract costs	5 years
Commissions capitalized as contract costs	$ 81,000,000.0	$ 61,300,000
Amortization of contract costs	39,700,000	28,600,000	$ 20,900,000
Impairment loss related to costs capitalized	0	0	0
Noncurrent portion of restricted cash	9,500,000	11,400,000
Advertising expenses	$ 33,100,000	$ 17,000,000.0	$ 10,000,000.0
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract duration	5 years

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives (Details)	12 Months Ended
	Jan. 31, 2021
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	7 years
Capitalized internal-use software costs
Property, Plant and Equipment [Line Items]
Intangible asset, useful life	3 years

Summary of Significant Accounting Policies - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 835,424	$ 586,067	$ 399,254
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	701,635	494,529	337,367
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 133,789	$ 91,538	$ 61,887

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Business Combinations (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Business Combinations (Details) - USD ($) $ in Thousands	Apr. 30, 2019	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Business Acquisition [Line Items]
Payments for business acquisition, net of cash acquired		$ 0	$ 44,283	$ 15,632
Purchased developed technology			$ 24,200
Weighted average useful life		3 years 1 month 6 days	3 years 10 months 24 days
Goodwill		$ 48,023	$ 48,023
Series of individually immaterial business acquisitions
Business Acquisition [Line Items]
Payments for business acquisition, net of cash acquired			44,200
Cash received from acquisition			1,100
Goodwill			29,900
Acquisition related costs	$ 3,000
Deferred compensation liability, noncurrent		10,800
Compensation expense		$ 3,000
Series of individually immaterial business acquisitions \| Purchased developed technology
Business Acquisition [Line Items]
Purchased developed technology			$ 15,700
Weighted average useful life			5 years

Cash Equivalents and Short-term Investments - Schedule of Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 2,430,865	$ 1,318,359
Unrealized Gain	2,000	1,205
Unrealized Loss	(24)	(8)
Estimated Fair Value	2,432,841	1,319,556
Cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Amortized Cost	311,257	436,580
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	311,257	436,580
Cash and cash equivalents \| Money market funds
Cash and Cash Equivalents [Line Items]
Amortized Cost	311,257	416,584
Unrealized Gain	0	0
Unrealized Loss	0	0
Estimated Fair Value	311,257	416,584
Cash and cash equivalents \| U.S. treasury securities
Cash and Cash Equivalents [Line Items]
Amortized Cost		19,996
Unrealized Gain		0
Unrealized Loss		0
Estimated Fair Value		19,996
Short-term Investments
Cash and Cash Equivalents [Line Items]
Amortized Cost	2,119,608	881,779
Unrealized Gain	2,000	1,205
Unrealized Loss	(24)	(8)
Estimated Fair Value	2,121,584	882,976
Short-term Investments \| U.S. treasury securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	1,888,882	575,920
Unrealized Gain	1,571	686
Unrealized Loss	(22)	(8)
Estimated Fair Value	1,890,431	576,598
Short-term Investments \| Corporate debt securities
Cash and Cash Equivalents [Line Items]
Amortized Cost	230,726	305,859
Unrealized Gain	429	519
Unrealized Loss	(2)	0
Estimated Fair Value	$ 231,153	$ 306,378

Cash Equivalents and Short-term Investments - Schedule of Contractual Maturities of Short-term Investments (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Amortized Cost
Amortized Cost	$ 2,430,865	$ 1,318,359
Estimated Fair Value
Total	2,432,841	1,319,556
Short-term Investments
Amortized Cost
Due within one year	1,509,241
Due between one to five years	610,367
Amortized Cost	2,119,608	881,779
Estimated Fair Value
Due within one year	1,510,810
Due between one to five years	610,774
Total	$ 2,121,584	$ 882,976

Cash Equivalents and Short-term Investments - Narrative (Details)	12 Months Ended
	Jan. 31, 2021 USD ($) investment	Jan. 31, 2020 USD ($) investment	Jan. 31, 2019 USD ($)
Investments, Debt and Equity Securities [Abstract]
Unsettled maturities of short-term investments	$ 31,000,000.0	$ 0
Interest receivable	$ 10,500,000	$ 5,700,000
Number of short-term investments in unrealized loss positions \| investment	10	7
Gross unrealized gains or losses from available-for-sale securities	$ 0	$ 0	$ 0
Realized gains or losses reclassified out of accumulated other comprehensive income	0	0	$ 0
Other-than-temporary impairment short term investment	$ 0	$ 0

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Assets:
Total cash equivalents	$ 311,257	$ 436,580
Total short-term investments	2,121,584	882,976
Total cash equivalents and short-term investments	2,432,841	1,319,556
Level 1
Assets:
Total cash equivalents	311,257	416,584
Total short-term investments	0	0
Total cash equivalents and short-term investments	311,257	416,584
Level 2
Assets:
Total cash equivalents	0	19,996
Total short-term investments	2,121,584	882,976
Total cash equivalents and short-term investments	2,121,584	902,972
Level 3
Assets:
Total cash equivalents	0	0
Total short-term investments	0	0
Total cash equivalents and short-term investments	0	0
U.S. treasury securities
Assets:
Total short-term investments	1,890,431	576,598
U.S. treasury securities \| Level 1
Assets:
Total short-term investments	0	0
U.S. treasury securities \| Level 2
Assets:
Total short-term investments	1,890,431	576,598
U.S. treasury securities \| Level 3
Assets:
Total short-term investments	0	0
Corporate debt securities
Assets:
Total short-term investments	231,153	306,378
Corporate debt securities \| Level 1
Assets:
Total short-term investments	0	0
Corporate debt securities \| Level 2
Assets:
Total short-term investments	231,153	306,378
Corporate debt securities \| Level 3
Assets:
Total short-term investments	0	0
Money market funds
Assets:
Total cash equivalents	311,257	416,584
Money market funds \| Level 1
Assets:
Total cash equivalents	311,257	416,584
Money market funds \| Level 2
Assets:
Total cash equivalents	0	0
Money market funds \| Level 3
Assets:
Total cash equivalents	$ 0	0
U.S. treasury securities
Assets:
Total cash equivalents		19,996
U.S. treasury securities \| Level 1
Assets:
Total cash equivalents		0
U.S. treasury securities \| Level 2
Assets:
Total cash equivalents		19,996
U.S. treasury securities \| Level 3
Assets:
Total cash equivalents		$ 0

Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values of Convertible Note (Details) - Senior Notes $ in Thousands	Jan. 31, 2021 USD ($)
Net Carrying Amount \| 2023 Notes
Debt Instrument [Line Items]
Convertible senior notes value	$ 36,092
Net Carrying Amount \| 2025 Notes
Debt Instrument [Line Items]
Convertible senior notes value	885,465
Net Carrying Amount \| 2026 Notes
Debt Instrument [Line Items]
Convertible senior notes value	867,643
Estimated Fair Value \| 2023 Notes
Debt Instrument [Line Items]
Convertible senior notes value	216,926
Estimated Fair Value \| 2025 Notes
Debt Instrument [Line Items]
Convertible senior notes value	1,605,508
Estimated Fair Value \| 2026 Notes
Debt Instrument [Line Items]
Convertible senior notes value	$ 1,493,850

Fair Value Measurements - Narrative (Details) $ / shares in Units, $ in Thousands	Jan. 31, 2021 USD ($) $ / shares
Debt Instrument [Line Items]
Closing price of common stock (in dollars per share) \| $ / shares	$ 259.01
2023 Notes \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	$ 40,246
2025 Notes \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	1,060,000
2026 Notes \| Senior Notes
Debt Instrument [Line Items]
Principal amount outstanding	$ 1,150,000

Goodwill and Intangible Assets, net - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Goodwill [Line Items]
Goodwill	$ 48,023,000	$ 48,023,000
Goodwill acquired		29,900,000
Goodwill impairments	$ 0	0	$ 0
Purchased developed technology		$ 24,200,000
Weighted average useful life	3 years 1 month 6 days	3 years 10 months 24 days
Amortization expense	$ 11,100,000	$ 10,600,000	$ 5,800,000
Capitalized internal-use software costs
Goodwill [Line Items]
Capitalized internal-use software	$ 5,500,000	$ 5,100,000

Goodwill and Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross	$ 59,185	$ 54,802
Accumulated Amortization	(32,176)	(22,154)
Write-offs	0	(119)
Net	27,009	32,529
Capitalized internal-use software costs
Finite-Lived Intangible Assets [Line Items]
Gross	30,259	24,890
Accumulated Amortization	(19,478)	(14,828)
Write-offs	0	(119)
Net	10,781	9,943
Purchased developed technology
Finite-Lived Intangible Assets [Line Items]
Gross	28,800	28,800
Accumulated Amortization	(12,694)	(6,321)
Write-offs	0	0
Net	16,106	22,479
Software licenses
Finite-Lived Intangible Assets [Line Items]
Gross	126	1,112
Accumulated Amortization	(4)	(1,005)
Write-offs	0	0
Net	$ 122	$ 107

Goodwill and Intangible Assets, net - Remaining Amortization Expense (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
2022	$ 10,354
2023	8,416
2024	7,354
2025	885
Total	$ 27,009	$ 32,529

Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 85,052	$ 69,944
Less accumulated depreciation	(22,269)	(16,409)
Property and equipment, net	62,783	53,535
Depreciation expense	9,400	8,800	$ 5,700
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,242	3,567
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,948	11,014
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 69,862	$ 55,363

Balance Sheet Components - Schedule of Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 1,166	$ 2,098	$ 1,472
Additions (reductions)	3,252	(673)	888
Write-offs	(967)	(259)	(262)
Balance, end of period	$ 3,451	$ 1,166	$ 2,098

Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued expenses	$ 24,717	$ 22,530
Accrued taxes payable	2,462	1,591
Operating lease liabilities	23,403	12,064
Other	3,147	702
Accrued expenses and other current liabilities	$ 53,729	$ 36,887
Operating lease liability, current, statement of financial position	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent

Balance Sheet Components - Schedule of Other Liabilities, Noncurrent (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred tax liabilities	$ 3,877	$ 1,558
Other	7,498	3,803
Other liabilities, noncurrent	$ 11,375	$ 5,361

Deferred Revenue and Performance Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue recognized that was included in the contract liability balance	$ 361.0	$ 241.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue from remaining performance obligations	1,796.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue from remaining performance obligations	$ 841.8
Remaining performance obligation, percentage	47.00%
Performance obligations expected to be satisfied, expected timing	12 months

Convertible Senior Notes, Net - Convertible Senior Notes Narrative (Details) $ / shares in Units, shares in Millions		1 Months Ended			3 Months Ended	9 Months Ended	12 Months Ended
	Feb. 01, 2021 USD ($)	Jun. 30, 2020 USD ($) shares	Sep. 30, 2019 USD ($) tradingDay $ / shares shares	Feb. 28, 2018 USD ($) tradingDay	Jan. 31, 2021 USD ($) $ / shares	Oct. 31, 2020 USD ($)	Jan. 31, 2021 USD ($) tradingDay $ / shares shares	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
Debt Instrument [Line Items]
Loss on early extinguishment and conversion of debt							$ 2,263,000	$ 14,572,000	$ 0
2023 Notes
Debt Instrument [Line Items]
Limitation on sale of common stock, sale price threshold, number of trading days \| tradingDay							80
2026 Notes
Debt Instrument [Line Items]
Redemption price percentage							130.00%
Senior Notes \| 2023 Notes
Debt Instrument [Line Items]
Fixed interest rate				0.25%
Net proceeds from notes				$ 335,000,000.0
Repayments of debt			$ 224,400,000
Repurchase amount		$ 260,500,000	604,800,000
Debt component of aggregate consideration		61,800,000	197,700,000
Equity component of aggregate consideration		$ 198,700,000	$ 407,100,000
Effective interest rate		4.90%	4.00%		5.68%		5.68%
Aggregate principal amount		$ 59,600,000	$ 183,100,000
Loss on early extinguishment and conversion of debt						$ 14,600,000	$ 2,200,000
Debt issuance costs					$ 10,000,000.0		10,000,000.0	$ 3,800,000
Senior notes		69,900,000
Repayments of debt		$ 200,000
Write off of deferred debt issuance cost							1,000,000.0
Principal amount outstanding					$ 40,246,000		$ 40,246,000
Initial conversion rate of common stock							0.0206795
Conversion price (in dollars per share) \| $ / shares					$ 48.36		$ 48.36
Limitation on sale of common stock, sale price threshold, number of trading days \| tradingDay				20
Limitation on sale of common stock, sale price threshold, trading period \| tradingDay				30
Threshold percentage of stock price trigger				130.00%			130.00%
Number of consecutive business days \| tradingDay							5
Percentage of closing sale price in excess of convertible notes				98.00%
Repayments of debt							$ 300,000
Debt conversion, original debt amount					$ 4,300,000		10,400,000
Redemption price percentage				100.00%
Issuance costs attributable to liability component					$ 7,700,000		$ 7,700,000
Senior Notes \| 2023 Notes \| Subsequent Event \| Forecast
Debt Instrument [Line Items]
Debt conversion, original debt amount	$ 3,200,000
Senior Notes \| 2025 Notes
Debt Instrument [Line Items]
Fixed interest rate			0.125%
Net proceeds from notes			$ 1,040,700,000
Effective interest rate					4.10%		4.10%
Debt issuance costs					$ 19,300,000		$ 19,300,000
Principal amount outstanding					1,060,000,000		$ 1,060,000,000
Initial conversion rate of common stock							0.0052991
Conversion price (in dollars per share) \| $ / shares			$ 188.71
Sales price as a percentage of conversion price			130.00%
Limitation on sale of common stock, sale price threshold, trading period \| tradingDay			30
Percentage of closing sale price in excess of convertible notes			98.00%
Redemption price percentage			100.00%
Issuance costs attributable to liability component					$ 15,300,000		$ 15,300,000
Limit within threshold of consecutive trading days \| tradingDay							20
Senior Notes \| 2026 Notes
Debt Instrument [Line Items]
Fixed interest rate					0.375%		0.375%
Net proceeds from notes							$ 1,134,800,000
Effective interest rate					5.75%		5.75%
Debt issuance costs					$ 15,200,000		$ 15,200,000
Principal amount outstanding					$ 1,150,000,000		$ 1,150,000,000
Initial conversion rate of common stock							0.0041912
Conversion price (in dollars per share) \| $ / shares					$ 238.60		$ 238.60
Sales price as a percentage of conversion price							130.00%
Limitation on sale of common stock, sale price threshold, trading period \| tradingDay							30
Number of consecutive business days \| tradingDay							5
Percentage of closing sale price in excess of convertible notes							98.00%
Redemption price percentage							100.00%
Issuance costs attributable to liability component					$ 11,100,000		$ 11,100,000
Limit within threshold of consecutive trading days \| tradingDay							20
Repurchased amount					0		$ 0
Additional Paid-in Capital \| Senior Notes \| 2023 Notes
Debt Instrument [Line Items]
Debt issuance costs, equity component					2,300,000		2,300,000
Equity issuance costs					271,000		271,000
Additional Paid-in Capital \| Senior Notes \| 2025 Notes
Debt Instrument [Line Items]
Equity issuance costs					4,040,000		4,040,000
Additional Paid-in Capital \| Senior Notes \| 2026 Notes
Debt Instrument [Line Items]
Equity issuance costs					$ 4,090,000		$ 4,090,000
Class A Common Stock \| Senior Notes \| 2023 Notes
Debt Instrument [Line Items]
Stock issued during the period (in shares) \| shares		1.4	3.0
Shares issued to settle debt \| shares							0.2

Convertible Senior Notes, Net - Schedule of Interest Expense (Details) - Senior Notes - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
2023 Notes
Debt Instrument [Line Items]
Contractual interest expense	$ 180	$ 606
Amortization of debt issuance costs	312	985
Amortization of debt discount	3,316	11,219
Total	3,808	12,810
2025 Notes
Debt Instrument [Line Items]
Contractual interest expense	1,325	519
Amortization of debt issuance costs	2,097	769
Amortization of debt discount	33,932	12,919
Total	37,354	$ 14,207
2026 Notes
Debt Instrument [Line Items]
Contractual interest expense	2,731
Amortization of debt issuance costs	813
Amortization of debt discount	27,954
Total	$ 31,498

Convertible Senior Notes, Net - Schedule of Convertible Debt (Details) - Senior Notes $ in Thousands	Jan. 31, 2021 USD ($)
2023 Notes
Liability component:
Principal	$ 40,246
Less: unamortized debt issuance costs and debt discount	(4,591)
Net carrying amount	35,655
2025 Notes
Liability component:
Principal	1,060,000
Less: unamortized debt issuance costs and debt discount	(186,971)
Net carrying amount	873,029
2026 Notes
Liability component:
Principal	1,150,000
Less: unamortized debt issuance costs and debt discount	(292,613)
Net carrying amount	857,387
Additional Paid-in Capital \| 2023 Notes
Equity component:
Notes	9,328
Less: issuance costs	(271)
Carrying amount of the equity component	9,057
Additional Paid-in Capital \| 2025 Notes
Equity component:
Notes	221,387
Less: issuance costs	(4,040)
Carrying amount of the equity component	217,347
Additional Paid-in Capital \| 2026 Notes
Equity component:
Notes	310,311
Less: issuance costs	(4,090)
Carrying amount of the equity component	$ 306,221

Convertible Senior Notes, Net - Note Hedges, Warrants and Capped Calls (Details) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended			12 Months Ended
	Jun. 30, 2020 USD ($) shares	Sep. 30, 2019 USD ($) $ / shares shares	Feb. 28, 2018 tradingDay	Jan. 31, 2021 USD ($) tradingDay $ / shares shares	Jan. 31, 2020 USD ($) shares	Jan. 31, 2019 USD ($) shares
Debt Instrument [Line Items]
Aggregate amount paid for cost of Note Hedge				$ 0	$ 0	$ 80,040
Proceeds from hedges related to convertible senior notes				195,046	405,851
Proceeds from issuance of warrants related to convertible senior notes				0	0	52,440
Payments for repurchase of warrants				$ 175,399	$ 358,622	$ 0
Antidilutive securities excluded from computation of earnings per share (in shares) \| shares				25,156	28,292	30,881
Payment for capped calls				$ 133,975	$ 74,094	$ 0
2023 Notes
Debt Instrument [Line Items]
Shares issuable under warrants granted (in shares) \| shares	1,400	4,600
Number of shares available for purchase \| shares				800
Number of warrants outstanding (in shares) \| shares				1,000
Limitation on sale of common stock, sale price threshold, number of trading days \| tradingDay				80
Per share value, shares issuable under warrants granted (in dollars per share) \| $ / shares				$ 68.06
Proceeds from issuance of warrants related to convertible senior notes				$ 52,400
Payments for repurchase of warrants	$ 175,400	$ 358,600
2025 Notes
Debt Instrument [Line Items]
Initial cap price (in dollars per share) \| $ / shares				$ 255.88
Payment for capped calls				$ 74,100
2026 Notes
Debt Instrument [Line Items]
Initial cap price (in dollars per share) \| $ / shares				$ 360.14
Payment for capped calls				$ 134,000
Senior Notes \| 2023 Notes
Debt Instrument [Line Items]
Shares issuable under warrants granted (in shares) \| shares	1,400	4,600		7,100
Conversion price (in dollars per share) \| $ / shares				$ 48.36
Aggregate amount paid for cost of Note Hedge				$ 80,000
Proceeds from hedges related to convertible senior notes	$ 195,000	$ 405,900
Hedge exercised, underlying debt instrument amount				$ 10,400
Hedge exercised, number of shares received \| shares				200
Number of warrants outstanding (in shares) \| shares				7,100
Limitation on sale of common stock, sale price threshold, number of trading days \| tradingDay			20
Senior Notes \| 2025 Notes
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares		$ 188.71
Senior Notes \| 2026 Notes
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares				$ 238.60
Convertible debt securities
Debt Instrument [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares) \| shares				832	2,494	7,134
Convertible debt securities \| 2025 Notes
Debt Instrument [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares) \| shares				5,600
Convertible debt securities \| 2026 Notes
Debt Instrument [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares) \| shares				4,800

Leases - Narrative (Details)	12 Months Ended
Leases - Narrative (Details)	Jan. 31, 2021 USD ($) renewalOption	Jan. 31, 2020 USD ($)
Other Commitments [Line Items]
Number of renewal options \| renewalOption	2
Operating lease renewal term	5 years
Weighted average remaining lease term	6 years 9 months 18 days	7 years 10 months 24 days
Weighted average discount rate	5.60%	5.70%
Operating lease payments	$ 31,100,000	$ 18,300,000
Operating lease impairment charge	$ 3,100,000	$ 0
San Francisco - Ten Year Lease
Other Commitments [Line Items]
Operating lease term	10 years

Leases - Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Leases [Abstract]
Operating lease costs	$ 33,076	$ 23,193	$ 23,290

Leases - Schedule of Maturities of Operating Leases (Details) $ in Thousands	Jan. 31, 2021 USD ($)
Leases [Abstract]
2022	$ 34,410
2023	37,910
2024	38,823
2025	36,289
2026	26,839
Thereafter	73,135
Total lease payments	247,406
Less imputed interest	(44,279)
Operating lease liability	$ 203,127

Commitments and Contingencies - Narrative (Details) - Letter of Credit - USD ($)	Jan. 31, 2021	Jan. 31, 2020
Other Commitments [Line Items]
Letters of credit issued and outstanding	$ 11,200,000	$ 11,900,000
Draws on letters of credit	$ 0

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Commitments and Contingencies - Summary of Future Commitment Maturity Schedules (Details) $ in Thousands	Jan. 31, 2021 USD ($)
Purchase Obligations
2022	$ 53,992
2023	38,370
2024	32,844
2025	1,604
2026	1,417
Total contractual obligations	$ 128,227

Common Stock and Stockholders' Equity - Narrative (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2020 shares	Sep. 30, 2019 shares	Jan. 31, 2021 USD ($) vote shares	Jan. 31, 2020 USD ($) shares	Jan. 31, 2019 USD ($) shares
Class of Stock [Line Items]
Non-cash charitable contributions \| $			$ 9,292	$ 1,746	$ 1,008
2023 Notes \| Senior Notes
Class of Stock [Line Items]
Hedge exercised, number of shares received			200,000
Class A Common Stock
Class of Stock [Line Items]
Number of votes per share \| vote			1
Number of shares issued upon conversion			1
Class A Common Stock \| 2023 Notes \| Senior Notes
Class of Stock [Line Items]
Stock issued during the period (in shares)	1,400,000	3,000,000.0
Shares issued to settle debt			200,000
Class A Common Stock \| Contribution of nonmonetary assets to charitable organization
Class of Stock [Line Items]
Issuance of common stock pursuant to charitable donation (in shares)			42,500	15,000	20,000
Non-cash charitable contributions \| $			$ 9,300	$ 1,700	$ 1,000
Class B Common Stock
Class of Stock [Line Items]
Number of votes per share \| vote			10

Common Stock and Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details)	Jan. 31, 2021 shares
Class of Stock [Line Items]
Common stock reserved for future issuance and options and unvested RSUs outstanding (in shares)	37,909,754
Options and unvested RSUs outstanding
Class of Stock [Line Items]
Options and unvested RSUs outstanding (in shares)	12,702,220
Common stock, reserved for future issuance (in shares)	20,574,441
ESPP
Class of Stock [Line Items]
Common stock, reserved for future issuance (in shares)	4,633,093

Employee Incentive Plans - Schedule of Stock-based Compensation Expense by Award Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 196,181	$ 126,624	$ 76,320
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	21,371	21,888	23,466
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	164,412	94,637	41,637
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	10,373	9,408	7,248
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	25	590	1,608
Restricted common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0	$ 101	$ 2,361

Employee Incentive Plans - Schedule of Stock-based Compensation Expense by Statement of Operations Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 196,181	$ 126,624	$ 76,320
Subscription
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	21,895	12,923	7,837
Professional services and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	8,083	7,164	4,983
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	63,270	37,683	22,642
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	53,802	38,077	22,916
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 49,131	$ 30,777	$ 17,942

Employee Incentive Plans - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2021 USD ($) incentive_plan offering_period $ / shares shares	Jan. 31, 2020 USD ($) $ / shares shares	Jan. 31, 2019 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans \| incentive_plan	2
Options to purchase common stock outstanding (in shares) \| shares	8,250,113	12,359,302
Weighted average grant date fair value of options granted (in dollars per share) \| $ / shares	$ 63.32	$ 37.35	$ 17.21
Grant date fair value of vested stock options	$ 19,700	$ 23,700	$ 23,800
Intrinsic value of options exercised	772,300	558,600	309,300
Unrecognized stock-based compensation expense	31,100	28,200
Issuance of common stock under employee stock purchase plan, net of cancellations	$ 25,911	$ 18,767	13,727
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (years)	10 years
Vesting period	4 years
Weighted average stock-based compensation recognition period	1 year 4 months 24 days	1 year 4 months 24 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average stock-based compensation recognition period	2 years 6 months
Granted during period (in shares) \| shares	2,198,704
Shares issued fair value	$ 381,800
Unrecognized compensation costs related to unvested restricted stock units	502,800
Fair value of units vested	$ 410,400	$ 193,900	$ 58,700
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average stock-based compensation recognition period	10 months 24 days
Unrecognized compensation costs related to unvested restricted stock units	$ 10,100
ESPP offering period	12 months
Number of offering periods \| offering_period	2
ESPP length of purchase period	6 months
Number of shares issued under ESPP \| shares	247,142	322,795
Weighted average price, shares issued under ESPP (in dollars per share) \| $ / shares	$ 104.84	$ 58.14
2017 Equity Incentive Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options to purchase common stock outstanding (in shares) \| shares	1,074,212
2017 Equity Incentive Plan \| Class B Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options to purchase common stock outstanding (in shares) \| shares	7,175,901
Vesting tranche one \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Vesting percentage earned by employees after each completed year of service	25.00%

Employee Incentive Plans - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Number of Options
Number of options, outstanding beginning of period (in shares)	12,359,302
Number of options, granted (in shares)	402,891
Number of options, exercised (in shares)	(4,368,683)
Number of options, canceled (in shares)	(143,397)
Number of options, outstanding end of period (in shares)	8,250,113	12,359,302
Vested and expected to vest, number of options (in shares)	8,250,113
Vested and exercisable, number of options (in shares)	6,818,491
Weighted- Average Exercise Price
Options outstanding, weighted average exercise price beginning of period (in dollars per share)	$ 11.82
Options granted, weighted average exercise price (in dollars per share)	145.08
Options exercised, weighted average exercise price (in dollars per share)	10.44
Options canceled, weighted average exercise price (in dollars per share)	19.23
Options outstanding, weighted average exercise price end of period (in dollars per share)	18.93	$ 11.82
Vested and expected to vest, weighted average exercise price (in dollars per share)	18.93
Vested and exercisable, weighted average exercise price (in dollars per share)	$ 9.93
Additional Disclosures
Options outstanding, weighted average remaining contractual term	5 years 7 months 6 days	6 years 2 months 12 days
Vested and expected to vest, weighted average remaining contractual term	5 years 7 months 6 days
Vested and exercisable, weighted average remaining contractual term	5 years 2 months 12 days
Options outstanding, aggregate intrinsic value	$ 1,980,668	$ 1,436,487
Vested and expected to vest, aggregate intrinsic value	1,980,668
Vested and exercisable, aggregate intrinsic value	$ 1,698,330

Employee Incentive Plans - Schedule of Estimated Fair Value Assumptions (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	45.00%	43.00%	40.00%
Expected term (in years)	6 years 3 months 18 days	6 years 3 months 18 days	6 years 3 months 18 days
Risk-free interest rate, minimum	0.37%	1.55%
Risk-free interest rate, maximum	0.44%	2.27%
Risk-free interest rate			2.70%
Expected dividend yield	0.00%	0.00%	0.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	0.09%	1.53%	2.12%
Risk-free interest rate, maximum	0.18%	2.05%	2.62%
Expected dividend yield	0.00%	0.00%	0.00%
ESPP \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	48.00%	43.00%	39.00%
Expected term (in years)	6 months	6 months	6 months
ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	54.00%	59.00%	70.00%
Expected term (in years)	1 year	1 year	1 year

Employee Incentive Plans - Schedule of Restricted Stock Unit Activity (Details) - RSUs	12 Months Ended
	Jan. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period (in shares) \| shares	4,893,241
Granted during period (in shares) \| shares	2,198,704
Vested during period (in shares) \| shares	(2,195,094)
Forfeited during period (in shares) \| shares	(444,744)
Outstanding at end of period (in shares) \| shares	4,452,107
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding at beginning of period (in dollars per share) \| $ / shares	$ 77.99
Granted during period (in dollars per share) \| $ / shares	173.64
Vested during period (in dollars per share) \| $ / shares	80.28
Forfeited during period (in dollars per share) \| $ / shares	90.01
Outstanding at end of period (in dollars per share) \| $ / shares	$ 122.90

Income Taxes - Schedule of Domestic and Foreign Components of Pre-tax Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (282,026)	$ (220,846)	$ (128,214)
Foreign	15,835	10,514	2,700
Loss before provision for (benefit from) income taxes	$ (266,191)	$ (210,332)	$ (125,514)

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

Income Taxes - Schedule of Components of Provision for (Benefit from) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Current:
Federal	$ 11	$ 33	$ 0
State	136	86	61
Foreign	1,294	822	667
Total current provision for income taxes	1,441	941	728
Deferred:
Federal	51	(518)	(620)
State	5	(406)	(130)
Foreign	(1,356)	(1,436)	5
Total deferred benefit from income taxes	(1,300)	(2,360)	(745)
Total provision for (benefit from) income taxes	$ 141	$ (1,419)	$ (17)

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
Income Taxes - Narrative (Details) - USD ($)	Jan. 31, 2021	Jan. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in valuation allowance	$ 193,600,000	$ 157,700,000
Accrued penalties and interest related to unrecognized tax benefits	0	$ 0
Domestic Tax Authority
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss carryforwards	2,390,300,000
Domestic Tax Authority \| Research Tax Credit Carryforward
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax credit carryforward	50,300,000
State and Local Jurisdiction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss carryforwards	1,541,900,000
State and Local Jurisdiction \| Research Tax Credit Carryforward
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax credit carryforward	33,400,000
State and Local Jurisdiction \| California Enterprise Zone Credit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax credit carryforward	1,000,000.0
UNITED KINGDOM
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss carryforwards	$ 49,400,000

Income Taxes - Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	4.10%	4.00%	3.80%
Change in valuation allowance	(101.00%)	(100.10%)	(68.50%)
Stock-based compensation	70.20%	59.80%	45.50%
Research and development credits	6.40%	18.00%	0.00%
Other, net	(0.80%)	(2.00%)	(1.80%)
Effective tax rate	(0.10%)	0.70%	0.00%

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 607,483	$ 370,705
Stock-based compensation	18,952	18,680
Deferred revenue	1,144	1,960
Operating lease liabilities	51,702	42,073
Other reserves and accruals	16,586	6,414
Research and development and other credits	57,060	39,918
Disallowed interest	6,091	4,507
Total deferred tax assets	759,018	484,257
Valuation allowance	(555,199)	(361,606)
Total deferred tax assets, net	203,819	122,651
Deferred tax liabilities:
Convertible debt	(112,547)	(50,963)
Deferred commissions	(38,710)	(27,569)
Capitalized internal-use software costs	(2,691)	(2,248)
Goodwill	(306)	(262)
Operating lease right-of-use assets	(37,522)	(31,165)
Depreciation and amortization	(8,522)	(8,315)
Total deferred tax liabilities	(200,298)	(120,522)
Net deferred tax asset	$ 3,521	$ 2,129

Income Taxes - Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross amount of unrecognized tax benefits as of the beginning of the year	$ 15,987	$ 23,931	$ 11,719
Additions based on tax positions related to a prior year	0	658	1,859
Additions based on tax positions related to current year	7,189	6,866	10,353
Reductions based on tax positions taken in a prior year	(952)	(15,468)	0
Gross amount of unrecognized tax benefits as of the end of the year	$ 22,224	$ 15,987	$ 23,931

Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Numerator:
Net loss	$ (266,332)	$ (208,913)	$ (125,497)
Denominator:
Weighted-average shares outstanding, basic and diluted (in shares)	127,212	117,221	107,504
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (2.09)	$ (1.78)	$ (1.17)
Class A Common Stock
Denominator:
Weighted-average shares outstanding, basic and diluted (in shares)	118,882	107,809	92,452
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (2.09)	$ (1.78)	$ (1.17)
Class B Common Stock
Denominator:
Weighted-average shares outstanding, basic and diluted (in shares)	8,330	9,412	15,052
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (2.09)	$ (1.78)	$ (1.17)
Common Stock \| Class A Common Stock
Numerator:
Net loss	$ (248,892)	$ (192,138)	$ (107,926)
Common Stock \| Class B Common Stock
Numerator:
Net loss	$ (17,440)	$ (16,775)	$ (17,571)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Net Loss Per Share - Schedule of Potentially Dilutive Securities Excluded from Computation (Details) - shares shares in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	25,156	28,292	30,881
Issued and outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	8,250	12,359	17,804
Unvested RSUs issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	4,452	4,893	4,836
Unvested restricted stock awards issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	177	388
Unvested shares subject to repurchase
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	5	48
Unvested restricted common stock issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	400
Shares committed under the ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	137	253	271
Shares related to 2023 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	832	2,494	7,134
Shares subject to warrants related to the issuance of 2023 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	1,048	2,494	0
Shares related to 2025 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,617	5,617	0
Shares related to 2026 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	4,820	0	0

Net Loss Per Share - Narrative (Details)	Jan. 31, 2021 $ / shares
2023 Notes
Debt Instrument [Line Items]
Class of warrant or right, conversion price (in dollars per share)	$ 68.06

Subsequent Events (Details) - Auth0 - Subsequent Event $ / shares in Units, $ in Billions	Mar. 03, 2021 USD ($) tradingDay $ / shares
Subsequent Event [Line Items]
Aggregate consideration \| $	$ 6.5
Share price (in dollars per share) \| $ / shares	$ 276.2147
Threshold trading days \| tradingDay	20

Label	Element	Value
Restricted Cash and Cash Equivalents, Current	us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue	$ 4,553,000
Restricted Cash and Cash Equivalents, Current	us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue	467,000
Restricted Cash and Cash Equivalents, Current	us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue	1,384,000
Restricted Cash and Cash Equivalents, Noncurrent	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent	9,470,000
Restricted Cash and Cash Equivalents, Noncurrent	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent	11,438,000
Restricted Cash and Cash Equivalents, Noncurrent	us-gaap_RestrictedCashAndCashEquivalentsNoncurrent	$ 11,437,000