Datadog (DDOG) 10-K 1 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Feb. 15, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	DDOG
Entity Registrant Name	Datadog, Inc.
Entity Central Index Key	0001561550
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 26,280
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity File Number	001-39051
Entity Tax Identification Number	27-2825503
Entity Address, Address Line One	620 8th Avenue
Entity Address, Address Line Two	45th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10018
City Area Code	866
Local Phone Number	329-4466
Title of 12(b) Security	Class A common stock, par value $0.00001 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement for its 2021 Annual Meeting of Stockholders are incorporated by reference into 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 December 31, 2020.
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		221,583,813
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		84,907,962

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 224,927	$ 597,297
Marketable securities	1,292,532	176,674
Accounts receivable, net of allowance for credit losses of $2,468 and $817 as of December 31, 2020 and 2019, respectively	163,359	102,394
Deferred contract costs, current	13,638	8,346
Prepaid expenses and other current assets	23,624	19,231
Total current assets	1,718,080	903,942
Property and equipment, net	47,197	32,749
Operating lease assets	57,829	53,002
Goodwill	17,609	9,058
Intangible assets, net	2,069	1,435
Deferred contract costs, non-current	26,750	17,409
Restricted cash	3,784	3,456
Other assets	16,967	16,990
TOTAL ASSETS	1,890,285	1,038,041
CURRENT LIABILITIES:
Accounts payable	21,342	15,429
Accrued expenses and other current liabilities	55,351	38,746
Operating lease liabilities, current	16,326	11,916
Deferred revenue, current	204,825	134,148
Total current liabilities	297,844	200,239
Operating lease liabilities, non-current	51,433	48,510
Convertible senior notes, net	575,864
Deferred revenue, non-current	3,450	4,340
Other liabilities	4,262	2,611
Total liabilities	932,853	255,700
COMMITMENTS AND CONTINGENCIES (NOTE 10)
STOCKHOLDERS' EQUITY:
Additional paid-in capital	1,103,305	905,821
Accumulated other comprehensive income	2,287	133
Accumulated deficit	(148,163)	(123,616)
Total stockholders’ equity	957,432	782,341
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,890,285	1,038,041
Class A Common Stock
STOCKHOLDERS' EQUITY:
Common stock, value	2	1
Class B Common Stock
STOCKHOLDERS' EQUITY:
Common stock, value	$ 1	$ 2

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts receivable, net of allowance for doubtful accounts	$ 2,468	$ 817
Class A Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	218,510,509	64,308,498
Common stock, shares outstanding	218,510,509	64,308,498
Class B Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	310,000,000	310,000,000
Common stock, shares issued	87,369,554	232,078,452
Common stock, shares outstanding	87,369,554	232,078,452

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Revenue	$ 603,466	$ 362,780	$ 198,077
Cost of revenue	130,197	88,949	46,529
Gross profit	473,269	273,831	151,548
Operating expenses:
Research and development	210,626	111,425	55,176
Sales and marketing	213,660	146,657	88,849
General and administrative	62,756	35,889	18,556
Total operating expenses	487,042	293,971	162,581
Operating loss	(13,773)	(20,140)	(11,033)
Other (expense) income:
Interest expense	(30,434)	(32)
Interest income and other income, net	21,985	4,196	793
Other (expense) income, net	(8,449)	4,164	793
Loss before provision for income taxes	(22,222)	(15,976)	(10,240)
Provision for income taxes	(2,325)	(734)	(522)
Net loss	(24,547)	(16,710)	(10,762)
Net loss attributable to common stockholders	$ (24,547)	$ (16,710)	$ (10,762)
Basic and diluted net loss per share	$ (0.08)	$ (0.12)	$ (0.15)
Weighted average shares used in calculating basic and diluted net loss per share:	300	140	71

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (24,547)	$ (16,710)	$ (10,762)
Other comprehensive income:
Foreign currency translation adjustments	1,089	55	78
Unrealized gain on available-for-sale marketable securities	1,065	47
Other comprehensive income	2,154	102	78
Comprehensive loss	$ (22,393)	$ (16,608)	$ (10,684)

CONSOLIDATED STATEMENTS OF CONV

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjusted Balance	Third-Party Tender Offer	IPO	Convertible Preferred Stock	Convertible Preferred StockCumulative Effect, Period of Adoption, Adjusted Balance	Convertible Preferred StockThird-Party Tender Offer	Convertible Preferred StockIPO	Class A and Class B Common Stock	Class A and Class B Common StockIPO	Non-Voting Common Stock	Non-Voting Common StockCumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common StockCumulative Effect, Period of Adoption, Adjusted Balance	Common StockThird-Party Tender Offer	Additional Paid-in Capital	Additional Paid-in CapitalCumulative Effect, Period of Adoption, Adjustment	Additional Paid-in CapitalCumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in CapitalThird-Party Tender Offer	Additional Paid-in CapitalIPO	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Deficit	Accumulated DeficitCumulative Effect, Period of Adoption, Adjustment	Accumulated DeficitCumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance at Dec. 31, 2017	$ (75,701)	$ (75,701)														$ 19,716	$ 775	$ 20,491			$ (48)	$ (48)	$ (95,369)	$ (775)	$ (96,144)
Convertible preferred stock, beginning balance, shares at Dec. 31, 2017					179,814,912	179,814,912
Convertible preferred stock, beginning balance at Dec. 31, 2017					$ 140,805	$ 140,805
Beginning balance, shares at Dec. 31, 2017											1,137,000	1,137,000	62,160,984	62,160,984
Accounting Standards Update [Extensible List]																	ddog:AccountingStandardUpdates201619Member							ddog:AccountingStandardUpdates201619Member
Issuance of common stock upon exercise of stock options	4,557															4,557
Issuance of common stock upon exercise of stock, shares													14,882,622
Vesting of early exercised stock options	375															375
Stock-based compensation	5,411															5,411
Reclassification or conversion of share											(1,137,000)		1,137,000
Other comprehensive income	78																				79
Other comprehensive income	79
Net loss	(10,762)																						(10,762)
Ending balance at Dec. 31, 2018	(76,041)															30,834					31		(106,906)
Convertible preferred stock, ending balance, shares at Dec. 31, 2018					179,814,912
Convertible preferred stock adjusted, ending balance at Dec. 31, 2018					$ 140,805
Ending balance, shares at Dec. 31, 2018													78,180,606
Issuance of common stock upon exercise of stock options	$ 7,173															7,173
Issuance of common stock upon exercise of stock, shares	10,546,987								429,430				10,117,557
Issuance of restricted shares of common stock, shares									244,445
Vesting of early exercised stock options	$ 1,883															1,883
Stock-based compensation	19,235															19,235
Reclassification or conversion of share							(803,481)	(179,011,431)	89,101,644	179,011,431			(89,101,644)		803,481
Reclassification or conversion of share, Value			$ 53	$ 140,752			$ (53)	$ (140,752)		$ 2									$ 53	$ 140,750
Issuance of class A common stock in connection with initial public offering, net of underwriting discounts and issuance costs	705,894								$ 1							705,893
Issuance of class A common stock in connection with initial public offering, net of underwriting discounts and issuance costs, shares									27,600,000
Other comprehensive income	102																				102
Net loss	(16,710)																						(16,710)
Ending balance at Dec. 31, 2019	782,341								$ 3							905,821					133		(123,616)
Ending balance, shares at Dec. 31, 2019									296,386,950
Issuance of common stock upon exercise of stock options	$ 16,009															16,009
Issuance of common stock upon exercise of stock, shares	8,753,274								8,753,274
Issuance of restricted shares of common stock	$ 5,169															5,169
Issuance of restricted shares of common stock, shares									120,992
Vesting of early exercised stock options	1,177															1,177
Vesting of restricted stock units, shares									170,892
Issuance of common stock under the employee stock purchase plan, net of shares withheld for taxes	13,906															13,906
Issuance of common stock under the employee stock purchase plan, net of shares withheld for taxes, shares									447,955
Stock-based compensation	77,778															77,778
Equity component of 2025 Convertible Senior Notes, net	173,070															173,070
Purchases of capped calls related to 2025 Convertible Senior Notes	(89,625)															(89,625)
Other comprehensive income	2,154																				2,154
Net loss	(24,547)																						(24,547)
Ending balance at Dec. 31, 2020	$ 957,432								$ 3							$ 1,103,305					$ 2,287		$ (148,163)
Ending balance, shares at Dec. 31, 2020									305,880,063

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (24,547)	$ (16,710)	$ (10,762)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	15,450	12,370	6,026
Amortization of discounts or premiums on marketable securities	9,753	12
Amortization of debt discount and issuance costs	18,727
Amortization of deferred contract costs	10,447	5,400	2,671
Stock-based compensation, net of amounts capitalized	74,374	19,034	5,244
Non-cash lease expense	14,060	11,763
Allowance for credit losses on accounts receivable	3,283	1,195	477
Loss on disposal of property and equipment	10	708	9
Changes in operating assets and liabilities:
Accounts receivable, net	(64,248)	(47,510)	(25,322)
Deferred contract costs	(25,080)	(20,146)	(8,925)
Prepaid expenses and other current assets	(4,403)	(10,046)	(1,331)
Other assets	968	(8,486)	(6,955)
Accounts payable	6,539	2,484	7,241
Accrued expenses and other liabilities	3,970	6,376	10,857
Deferred revenue	69,788	67,790	31,599
Net cash provided by operating activities	109,091	24,234	10,829
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(1,794,562)	(176,639)
Maturities of marketable securities	506,554
Proceeds from sale of marketable securities	163,630
Purchases of property and equipment	(5,415)	(13,315)	(9,662)
Capitalized software development costs	(20,468)	(10,128)	(6,176)
Cash paid for acquisition of businesses; net of cash acquired	(2,363)	(2,138)	(1,618)
Net cash used in investing activities	(1,152,624)	(202,220)	(17,456)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	15,985	7,899	7,782
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs	(421)	706,317
Proceeds from issuance of common stock under the employee stock purchase plan	15,170
Employee payroll taxes paid related to net share settlement under the employee stock purchase plan	(1,040)
Proceeds from issuance of convertible senior notes, net of issuance costs	730,207
Purchase of capped call related to convertible senior notes	(89,625)
Net cash provided by financing activities	670,276	714,216	7,782
Effect of exchange rate changes on cash, cash equivalents and restricted cash	779	(21)	47
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(372,478)	536,209	1,202
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period	601,189	64,980	63,778
CASH, CASH EQUIVALENTS AND RESTRICTED CASH —End of period	228,711	601,189	64,980
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for income taxes	410	143	36
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Accrued property and equipment purchases	234	315	25
Stock-based compensation included in capitalized software development costs	3,404	201	167
Vesting of early exercised options	1,177	1,883	375
Costs related to initial public offering included in accounts payable and accrued liabilities		423
Issuance of restricted shares of common stock for the acquisition of businesses	5,169
Acquisition holdback	1,500
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONSOLIDATED BALANCE SHEETS TO THE AMOUNTS SHOWN IN THE STATEMENTS OF CASH FLOWS ABOVE:
Cash and cash equivalents	224,927	597,297	53,639
Restricted cash – Including amounts in prepaid expense and other current assets and other assets	$ 3,784	$ 3,892	$ 11,341
Restricted Cash and Cash Equivalents, Asset, Statement of Financial Position [Extensible List]	ddog:PrepaidExpenseOtherCurrentAssetsAndOtherAssets	ddog:PrepaidExpenseOtherCurrentAssetsAndOtherAssets	ddog:PrepaidExpenseOtherCurrentAssetsAndOtherAssets
CASH, CASH EQUIVALENTS AND RESTRICTED CASH —End of period	$ 228,711	$ 601,189	$ 64,980

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Description of Business	1. Organization Description Datadog, ,

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis Basis of Presentation The Principles The r Initial Public Offering On September 23, 2019, the Company completed its initial public offering (“IPO”), in which the Company issued and sold 24,000,000 shares of its Class A common stock at a public offering price of $27.00 per share, which resulted in net proceeds of $615.6 million after deducting underwriting discounts and commissions. On September 25, 2019, the underwriters exercised their option to purchase an additional 3,600,000 shares of Class A common stock at $27.00 per share, resulting in additional proceeds of $92.3 million, net of underwriters’ discounts and commissions. Immediately prior to the closing of the IPO, all shares of common stock then outstanding were reclassified as Class B common stock and all shares of the convertible preferred stock then outstanding automatically converted into 179,011,431 shares of Class B common stock. The Company incurred $2.0 million of net offering costs in connection with the IPO which were recorded as an offset against IPO proceeds. Stock Split and Authorized Shares On January 2, 2018, the Company’s Board of Directors (the “Board”) and stockholders approved a 4-for-1 stock split of the Company’s then-outstanding common stock and convertible preferred stock was effected without any change in the par value per share. On September 6, 2019, the Board and stockholders approved an amended and restated certificate of incorporation of the Company effecting a 3-for-1 stock split of the Company’s issued and outstanding shares of common stock and convertible preferred stock, and an increase to the authorized shares of the Company’s common stock and convertible preferred stock to 380,000,000 shares and 179,814,912 shares, respectively. The split was effected on September 6, 2019 and without any change in the par value per share. All information related to the Company’s common stock, convertible preferred stock and stock awards has been retroactively adjusted to give effect to 3-for-1 stock split on September 6, 2019. On September 23, 2019, an amended and restated certificate of incorporation of the Company was filed immediately prior to the closing of the IPO authorizing an aggregate of 2,330,000,000 shares of capital stock of the Company, including 2,000,000,000 shares of Class A common stock, 310,000,000 shares of Class B common stock and 20,000,000 shares of preferred stock. Segment The Use of Estimates The the allowance for credit losses stock-based compensation including the determination of the fair value of the Company’s stock prior to its IPO, fair value of the liability component of the convertible debt, Foreign Currency Translation The ( equity (deficit) Transaction e Revenue Recognition The Company generates an or multi-year The Company accounts (1) identify r (2) identify t (3) determine e (4) allocate e to the performance obligations in the contract (5) recognize n The Company’s s The transaction price is based on the fixed price for the contracted level of service plus variable consideration for additional optional purchases. Billing periods correspond to the periods over which services are performed and there are no discounts given on the purchase of future services. The Revenue For r The Deferred Revenue and Remaining Performance Obligations Certain of the Company’s customers pay in advance of satisfaction of performance obligations and other customers with monthly contract terms are billed in arrears on a monthly basis. The Company records contract liabilities to deferred revenue when customers are billed or when the Company receives customer payments in advance of the performance obligations being satisfied on the Company’s contracts. Remaining performance obligations represent the aggregate amount of the transaction price in contracts allocated to performance obligations not delivered, or partially undelivered, as of the end of the reporting period. Remaining performance obligations include unearned revenue, multi-year contracts with future installment payments and certain unfulfilled orders against accepted customer contracts at the end of any given period. Convertible Senior Notes In accounting for the issuance of the Company’s convertible senior notes (the “2025 Notes”), the 2025 Notes were separated into liability and equity components. The carrying amounts of the liability component was calculated by measuring the fair value of similar liabilities that do not have associated convertible features. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the respective 2025 Notes. This difference represents the debt discount that is amortized to interest expense over the contractual terms of the 2025 Notes using the effective interest rate method. The equity component was recorded in additional paid-in capital and is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the debt issuance costs related to the 2025 Notes, the Company allocated the total amount incurred to the liability and equity components of the 2025 Notes in the same proportion as the allocation of the proceeds. Issuance costs attributable to the liability component are being amortized to interest expense over the contractual terms of the 2025 Notes. The issuance costs attributable to the equity component were netted against the equity component in additional paid-in capital. Cost of Revenue Cost e Research and Development Research s Sales and Marketing Sales and marketing primarily Advertising Advertising and Income The The Stock-Based The Company recognizes and measures restricted stock units (“RSUs”), and the employee stock purchase plan (the “ESPP”) The Company also has certain options that have performance-based vesting conditions; stock-based compensation expense for such awards is recognized on a straight-line basis from the time the vesting condition is likely to be met through the time the vesting condition has been achieved. Cash and Cash Equivalents The Marketable Securities The Company’s marketable securities consist of commercial debt securities, U.S. government treasury securities, and commercial paper. The Company determines the appropriate classification of its marketable securities at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its marketable securities 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, the Company classifies its marketable securities within current assets on the consolidated balance sheet. Available-for-sale securities are recorded at fair value each reporting period. Premiums and discounts are amortized or accreted over the life of the related available-for-sale security as an adjustment to yield using the effective interest method. Interest income is recognized when earned. Unrealized gains and losses on these marketable securities are presented net of tax and reported as a separate component of accumulated other comprehensive income until realized. Realized gains and losses are determined based on the specific identification method and are reported in Interest income and other income, net in the consolidated statements of operations. The Company periodically evaluates its marketable securities to assess whether an investment’s fair value is less than its amortized cost basis and if the decline in the fair value is attributable to a credit loss. Declines in fair value judged to be related to credit loss are reported in Interest income and other income, net in the consolidated statements of operations. Restricted Restricted Concentration Financial Geographical Information- Long lived assets As Fair Value of Financial The accounting guidance for -tiered Level Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date. Level Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date. The Company’s financial instruments consist of cash equivalents, marketable securities, accounts receivable, accounts payable and accrued expenses. Cash equivalents are stated at amortized cost, which approximates fair value at the balance sheet dates, due to the short period of time to maturity. Marketable securities are recorded at fair value. Accounts receivable, accounts payable, and accrued expenses are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. A Accounts Receivable and Allowance for Credit Losses Accounts receivable includes billed and unbilled receivables. Trade accounts receivable are recorded at invoiced amounts and do not bear interest. The expectation of collectability is based on a review of credit profiles of customers, contractual terms and conditions, current economic trends, and historical payment experience. The Company regularly reviews the adequacy of the allowance for credit losses by considering the age of each outstanding invoice and the collection history to determine the appropriate amount of allowance for credit losses. Accounts receivable deemed uncollectible are charged against the allowance for credit losses when identified. Unbilled accounts receivable represents revenue recognized on contracts for which billings have not yet been presented to customers because the amounts were earned but not contractually billable as of the balance sheet date, substantially all of which is expected to be billed and collected within one year. Internal The Capitalized Property Property Deferred Contract Costs Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. There are no sales commissions earned on renewals The Company determined the period of benefit by taking into consideration the length of terms in its customer contracts, life of the technology and other factors Deferred contract costs are periodically analyzed for impairment. Amortization expense is included in sales and marketing expenses in the accompanying consolidated statements of operations. Business Combinations When e Accounting for Long-lived Computers and equipment 3 years Furnitures and fixtures 5 years Leasehold improvements Shorter of lease term or useful life of asset Capitalized software development costs 2 years Intangible assets 3 years The Goodwill Operating The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are reflected within operating lease assets, operating lease liabilities, current, and operating lease liabilities, non-current, on the consolidated balance sheets. For short-term leases (an initial term of 12 months or less), an operating lease asset and corresponding lease liability are not recorded and the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term. Operating lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Operating lease assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company generally uses its incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. The operating lease assets also include any lease payments made and excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has lease agreements with lease and non-lease components, which are accounted for separately. Prior to the adoption of ASC 842, Leases Net Income Basic Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments 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 Internal-Use Software In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes Accounting Pronouncements In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity Derivatives and Hedging

Marketable Securities

Marketable Securities	12 Months Ended
	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Marketable Securities	3. Marketable Securities The following is a summary of available-for-sale marketable securities, excluding those securities classified within cash and cash equivalents on the consolidated balance sheet as of December 31, 2020 and December 31, 2019 (in thousands): December 31, 2020 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 926,836 $ 1,157 $ (143 ) $ 927,850 Certificates of deposit 47,214 43 (1 ) 47,256 U.S. government treasury securities 108,092 203 (1 ) 108,294 Commercial paper 209,111 32 (11 ) 209,132 Marketable securities $ 1,291,253 $ 1,435 $ (156 ) $ 1,292,532 December 31, 2019 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 80,376 $ 46 $ (5 ) $ 80,417 U.S. government treasury securities 72,467 10 (4 ) 72,473 Commercial paper 23,784 — — 23,784 Marketable securities $ 176,627 $ 56 $ (9 ) $ 176,674 As of December 31, 2020, the fair values of available-for-sale marketable securities, by remaining contractual maturity, were as follows (in thousands): Due within one year $ 994,178 Due in one year through five years 298,354 Total $ 1,292,532 The Company does not believe that any unrealized losses are attributable to credit-related factors based on its evaluation of available evidence. To determine whether a decline in value is related to credit loss, the Company evaluates, among other factors: the extent to which the fair value is less than the amortized cost basis, changes to the rating of the security by a rating agency and any adverse conditions specifically related to an issuer of a security or its industry. Unrealized gain and losses on marketable securities are presented net of tax.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements The following tables present information about the Company’s financial assets and liabilities that have been measured at fair value on a recurring basis as of December 31, 2020 and 2019, and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands): Fair Value Measurement as of December 31, 2020 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 181,743 $ — $ — $ 181,743 Commercial paper — 25,195 — 25,195 Marketable Securities: Corporate debt securities — 927,850 — 927,850 Certificates of deposit — 47,256 — 47,256 U.S. government treasury securities — 108,294 — 108,294 Commercial paper — 209,132 — 209,132 Total financial assets $ 181,743 $ 1,317,727 $ — $ 1,499,470 Fair Value Measurement as of December 31, 2019 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 588,762 $ — $ — $ 588,762 Marketable Securities: Corporate debt securities — 80,417 — 80,417 U.S. government treasury securities — 72,473 — 72,473 Commercial paper — 23,784 — 23,784 Total financial assets $ 588,762 $ 176,674 $ — $ 765,436 The Company classifies its highly liquid money market funds within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. The Company classifies its commercial paper, corporate debt securities, In addition to its cash equivalents and marketable securities, the Company measures the fair value of its outstanding convertible senior notes on a quarterly basis for disclosure purposes. The Company considers the fair value of the convertible senior notes to be a Level 2 measurement due to limited trading activity of the convertible senior notes. Refer to Note 9, Convertible Senior Notes

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	12 Months Ended
	Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]
Prepaid Expenses and Other Current Assets	5. Prepaid Expenses and Other Prepaid December 31, 2020 December 31, 2019 Hosting $ 7,196 $ 9,180 General prepaid expenses 8,224 5,700 Other receivables 7,836 2,578 Rent 336 821 Marketing 32 516 Restricted cash — 436 Total prepaid expenses and other current assets $ 23,624 $ 19,231

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Property and Equipment, Net	6. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): December 31, 2020 December 31, 2019 Computers and equipment $ 11,490 $ 7,536 Furniture and fixtures 5,087 4,804 Leasehold improvements 17,639 16,517 Capitalized software development costs 48,502 24,630 Total property and equipment $ 82,718 $ 53,487 Less: accumulated depreciation and amortization (35,521 ) (20,738 ) Total property and equipment, net $ 47,197 $ 32,749 As discussed in Note 2, Basis of Presentation and Summary of Significant Accounting Policies Depreciation and amortization expense was approximately $14.5 million, $11.6 million, and $5.5 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Acquisition, Intangible Assets

Acquisition, Intangible Assets and Goodwill	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Acquisition, Intangible Assets and Goodwill	7. Acquisitio n 2020 Acquisition During the year ended December 31, 2020, the Company completed an acquisition with the purchase price in cash and stock. The acquisition was accounted for as a business combination in accordance with ASC 805, Business Combinations 2019 Acquisition On November 6, 2019, the Company entered into a Stock Purchase Agreement whereby the Company acquired all of the issued and outstanding shares of a target company for $2.2 million in cash consideration. The acquisition was accounted for as a business combination in accordance with ASC 805, Business Combinations The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed at the date of acquisition were as follows (in thousands): Fair Value Fair value of net assets acquired: Net tangible assets $ 9 Software technology 910 Goodwill 1,285 Total fair value of net assets acquired $ 2,204 2018 Acquisition On Business Combination s The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed Fair Value Fair value of net assets acquired: Net tangible assets (liabilities) $ (536 ) Developed technology 825 Goodwill 1,334 Total fair value of net assets acquired $ 1,623 Intangibles, December 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,331 $ (1,262 ) $ 2,069 3 years December 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,611 ) $ 1,435 2-3 years Intangible As of December 31, 2020, future Amount 2021 $ 1,042 2022 774 2023 253 Total $ 2,069 The changes Amount Balance as of December 31, 2019 $ 9,058 Foreign currency translation adjustments 737 2020 acquisition $ 7,814 Balance as of December 31, 2020 $ 17,609

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2020
Payables And Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	8. Accrued Expenses and Other Certain prior year amounts have been reclassified for consistency in presentation with the current year presentation. These reclassifications had no effect on the reported results of operations . Accrued December 31, 2020 December 31, 2019 Accrued compensation and commissions $ 22,186 $ 16,256 Accrued expenses 20,008 12,505 Early exercise liability-stock options 599 1,776 Other tax liability and sales tax 12,558 8,209 Total accrued expenses and other current liabilities $ 55,351 $ 38,746

Convertible Senior Notes

Convertible Senior Notes	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Convertible Senior Notes	9. Convertible Senior Notes On June 2, 2020, the Company issued $747.5 million aggregate principal amount of 0.125% convertible senior notes due 2025 (the “2025 Notes”) in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (“Securities Act”). The total net proceeds from the sale of the 2025 Notes, after deducting the initial purchasers’ discounts and debt issuance costs, were approximately $730.2 million. The 2025 Notes bear interest at a rate of 0.125% per year, payable semiannually in arrears on June 15 and December 15 of each year, beginning on December 15, 2020. The 2025 Notes will mature on June 15, 2025, unless earlier converted, redeemed or repurchased. Holders may convert their notes at their option at any time prior to the close of business on the business day immediately preceding March 15, 2025 only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on September 30, 2020 (and only during such calendar quarter), if the last reported sale price of the Company’s Class A common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any ten consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of 2025 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s Class A common stock and the conversion rate on each such trading day; (3) if the Company calls such 2025 Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events, On or after March 15, 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 notes, in integral multiples of $1,000 principal amount, at the option of the holder regardless of the foregoing circumstances. During the 12 months ended December 31, 2020, the conditions allowing holders of the 2025 Notes to convert have not been met. The 2025 Notes were therefore not convertible during the 12 months ended December 31, 2020 and were classified as long-term debt on the Company’s consolidated balance sheets. The Company may not redeem the 2025 Notes prior to June 20, 2023. On or after June 20, 2023, and prior to the 31st scheduled trading day immediately preceding the maturity date, the Company may redeem for cash all or any portion of the 2025 Notes, at its option, if the last reported sale price of its Class A common stock was 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 immediately preceding the date on which the Company provides a notice of redemption at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. In accounting for the issuance of the 2025 Notes, the 2025 Notes were separated into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of similar liabilities that do not have associated convertible features. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the respective 2025 Notes. This difference represents the debt discount In accounting for the debt issuance costs of $17.3 million related to the 2025 Notes, the Company allocated the total amount incurred to the liability and equity components of the 2025 Notes in the same proportion as the allocation of the proceeds. Issuance costs attributable to the liability component were $13.2 million and will be amortized, along with the debt discount, to interest expense over the contractual term of the 2025 Notes at an effective interest rate of 5.97%. Issuance costs attributable to the equity component were $4.1 million and are netted against the equity component in additional paid-in capital The net carrying amount of the liability component of the 2025 Notes was as follows (in thousands): December 31, 2020 Principal $ 747,500 Unamortized debt discount (159,547 ) Unamortized debt issuance costs (12,089 ) Net carrying amount $ 575,864 The net carrying amount of the equity component of the 2025 Notes was as follows (in thousands): December 31, 2020 Debt discount for conversion option $ 177,169 Issuance costs (4,099 ) Net carrying amount $ 173,070 As of December 31, 2020, the total estimated fair value of the 2025 Notes was approximately $981.7 million. The fair value was determined based on the closing trading price per $100 of the 2025 Notes as of the last day of trading for the period. The fair value of the 2025 Notes is primarily affected by the trading price of the Company’s Class A common stock and market interest rates. The following table sets forth the interest expense related to the 2025 Notes for years ended December 31, 2020 (in thousands): Year Ended December 31, 2020 Contractual interest expense $ 540 Amortization of debt discount 17,621 Amortization of issuance costs 1,106 Total $ 19,267 Capped Calls In connection with the pricing of the 2025 Notes, the Company entered into privately negotiated capped call transactions with certain counterparties (“Capped Calls”). The Capped Calls each have an initial strike price of approximately $92.30 per share, subject to certain adjustments, which corresponds to the initial conversion price of the 2025 Notes. The Capped Calls have initial cap prices of $151.04 per share, subject to certain adjustments. The Capped Calls are expected to partially offset the potential dilution to the Company’s Class A common stock upon any conversion of the 2025 Notes, with such offset subject to a cap based on the cap price. The Capped Calls cover, subject to anti-dilution adjustments, approximately 8.1 million shares of the Company’s Class A common stock. For accounting purposes, the Capped Calls are separate transactions, and not part of the 2025 Notes. As these transactions meet certain accounting criteria, the Capped Calls are recorded in stockholders' equity and are not accounted for as derivatives. The cost of $89.6 million incurred to purchase the Capped Calls was recorded as a reduction to additional paid-in capital and will not be remeasured.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments Non-cancelable Material Commitments —As of December 31, 2020, the Company had purchase commitments of $184.2 million, primarily related to cloud hosting and other software-based services. Lease Commitment s —The Company has entered into various noncancelable operating leases for its facilities expiring between fiscal 2021 and 2029. Certain operating leases contain provisions under which monthly rent escalates over time. When lease agreements contain escalating rent clauses or free rent periods, the Company recognizes rent expense on a straight-line basis over the term of the lease. Rent expense for the years ended December 31, 2020, 2019 and 2018 was $20.8 million, $16.7 million and $10.0 million, respectively. During 2020, 2019 and 2018, $1.0 million, $1.0 million and $0.7 million, Non-Income s — In January 2015, the Company recorded a $5.0 million contingent Federal payroll tax liability in conjunction with common stock repurchase transactions, as part of a capital raise, with certain of its employees. The potential payroll tax treatment of these transactions was subject to uncertainty, and the contingent payroll tax liability was deemed probable and reasonably estimable. On April 15, 2019, the period of limitations for assessing the contingent Federal payroll tax liability expired and the Company was legally released from being the primary obligor. As a result, the Company recognized a $5.0 million benefit in the operating expenses section of the consolidated statement of operations during the year ended December 31, 2019 In certain of its employees. The potential payroll tax treatment of these transactions was subject to uncertainty, and the contingent payroll tax liability was deemed probable and reasonably estimable. On April 15, 2020, the period of limitations for assessing the contingent Federal payroll tax liability expired and the Company was legally released from being the primary obligor. As a result, the Company recognized a $5.6 million benefit in the operating expenses section of the consolidated statement of operations during the year ended December 31, 2020. 401(k) Plan —The Company sponsors a 401(k) defined contribution plan covering all eligible US employees. Contributions to the 401(k) plan are discretionary. The Company did not make any matching contributions to the 401(k) plan for the years ended December 31, 2020 and 2019. Legal s —The Company is involved from time to time in various claims and legal actions arising in the ordinary course of business. While it is not feasible to predict or determine the ultimate outcome of these matters, the Company believes that none of its current legal proceedings will have a material adverse effect on its financial position or results of operation s . Indemnificatio n —The Company enters into indemnification provisions under some agreements with other parties in the ordinary course of business, including business partners, investors, contractor s , customers, and the Company’s officers, directors and certain employees. The Company has agreed to indemnify and defend the indemnified party claims and related losses suffered or incurred by the indemnified party from actual or threatened third-party claim because of the Company’s activities or non-compliance with certain representations and warranties made by the Company. It is not possible to determine the maximum potential loss under these indemnification provisions due to the Company’s limited history of prior indemnification claims and the unique facts and circumstances involved in each particular provision. To date, losses recorded in the Company’s consolidated statements of operations in connection with the indemnification provisions have not been material.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	11. Leases The Lease The Year Ended December 31, 2020 Year Ended December 31, 2019 Operating lease cost (1) $ 17,081 $ 13,636 Variable lease cost (2) — 94 Short-term lease cost 3,717 2,925 1) Includes 2) Primarily Supplemental Year Ended December 31, 2020 Year Ended December 31, 2019 Cash paid for amounts included in measurement of lease liabilities $ 15,074 $ 9,767 Operating lease assets obtained in exchange for new lease liabilities 17,379 14,618 Maturities Amount 2021 $ 19,072 2022 20,292 2023 18,210 2024 2,572 2025 2,766 Thereafter 12,747 Total lease payments $ 75,659 Less: imputed interest (7,900 ) Present value of lease liabilities $ 67,759 As of December 31, 2020, the Company had one additional operating lease that had not yet commenced, which is excluded from the table above. The operating lease will commence in fiscal year 2021 and had $19.0 million of undiscounted future payments with a lease term of 7.75 years. Weighted December 31, 2020 December 31, 2019 Weighted average remaining lease term (years) 4.4 4.0 Weighted average discount rate 4.71 % 4.98 %

Revenue

Revenue	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue	12. Revenue 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 December 31, 2020 2019 2018 North America $ 449,899 $ 272,190 $ 150,945 International 153,567 90,590 47,132 Total $ 603,466 $ 362,780 $ 198,077 Other Accounts Receivable As of December 31, 2020, and 2019, unbilled accounts receivable of approximately $20.1 million and $14.4 million, respectively, was included in accounts receivable on the Company’s consolidated balance sheets. During the years ended December 31, 2020 and 2019, the Company charged $1.6 million and $0.9 million, respectively, of accounts receivable deemed uncollectible against the allowance for credit losses. Deferred Revenue and Remaining Performance Obligations Revenue recognized during the years ended December 31, 2020, 2019 and 2018 which was included in the deferred revenue balances at the beginning of each respective period, was $126.8 million, $71.0 million, and $37.1 million. As of December 31, 2020, and 2019, the aggregate transaction price allocated to remaining performance obligations was $434.1 million and $243.8 million, respectively. There is uncertainty in the timing of revenues associated with the Company’s drawdown contracts, as future revenue can often vary significantly from past revenue . Deferred Contract Costs Deferred contract costs on the Company’s consolidated balance sheets were $40.4 million and $25.8 million as of December 31, 2020 and 2019, respectively. Amortization expense was $10.4 million, $5.4 million and $2.7 million for the years ended December 31, 2020, 2019 and 2018, respectively. The following table represents a rollforward of the Company’s deferred contract costs (in thousands): Amount Balance as of December 31, 2017 $ 4,755 Additions to deferred contract costs 8,925 Amortization of deferred contract costs (2,671 ) Balance as of December 31, 2018 $ 11,009 Additions to deferred contract costs 20,146 Amortization of deferred contract costs (5,400 ) Balance as of December 31, 2019 $ 25,755 Additions to deferred contract costs 25,080 Amortization of deferred contract costs (10,447 ) Balance as of December 31, 2020 $ 40,388

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Stockholders' Equity	13. Stockholders’ Equity Class A and Class B Common Stock The Company has two classes of common stock, Class A and Class B. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share. Shares of Class B common stock may be converted into Class A common stock at any time at the option of the stockholder and are automatically converted upon the sale or transfer to Class A common stock, subject to certain limited exceptions. During the year ended December 31, 2020, 145,387,306 shares of Class B common stock were converted into Class A common stock. As of December 31, 2020, the Company had authorized 2,000,000,000 shares of Class A common stock and 310,000,000 shares of Class B common stock, each at a par value per share of $0.00001, of which 218,510,509 shares of Class A common stock and 87,369,554 shares of Class B common stock were issued and outstanding. As of December 31, 2020 and 2019, December 31, 2020 2019 Options and RSU's outstanding 32,235,043 37,031,861 Shares available for future option and RSU grants 42,797,432 31,729,237 Shares available subject to the 2019 ESPP 9,222,883 6,725,000 84,255,358 75,486,098 Equity Incentive Plans The Company has two equity incentive plans, the 2012 equity incentive plan (the “2012 Plan”) and the 2019 equity incentive plan (the “2019 Plan”). In connection with the IPO, the Company ceased granting awards under the 2012 Plan, and all shares that remained available for issuance under the 2012 Plan at that time were transferred to the 2019 Plan. Additionally, as of December 31, 2020, there were 27,033,564 shares of Class A common stock issuable upon conversion of Class B common stock underlying options outstanding under the 2012 Plan. As of December 31, 2020, the Company was authorized to grant awards representing up to 86,086,351 shares under the 2019 Plan and had awards representing 42,797,432 shares of Class A common stock available to grant under the 2019 Plan. Stock Options The The following Year Ended December 31, 2020 2019 2018 Expected volatility 38.9% 38.9% - 39.5% 38.4% - 39.0% Risk-free interest rate 1.7% 1.4% - 2.6% 2.6% - 3.0% Expected dividend yield —% —% —% Expected term (in years) 6.1 5.2 - 6.3 5.8 - 6.1 Fair value of common stock $ 41.19 $6.16 - $38.21 $2.23 - $5.63 Expected y —The Company performed an analysis of its peer companies with similar expected lives to develop an expected volatility assumption. Expected —Derived from the life of the options granted under the option plan and is based on the simplified method which is essentially the weighted average of the vesting period and contractual term. Risk-free e —Based upon quoted market yields for the United States Treasury debt securities. Expected d —Since the Company has never paid and has no intention to pay cash dividends on common stock, the expected dividend yield is zero. Fair k —Prior to the IPO, the fair value of common stock underlying the stock-based awards was determined by the Company’s Board of Directors. The Board of Directors considered numerous objective and subjective factors to determine the fair value of the Company’s common stock at each meeting in which awards were approved. The factors considered included, but were not limited to: (i) the results of contemporaneous independent third-party valuations of the Company’s common stock; (ii) the prices, rights, preferences, and privileges of the Company’s redeemable convertible Preferred Stock relative to those of its common stock; (iii) the lack of marketability of the Company’s common stock; (iv) actual operating and financial results; (v) current business conditions and projections; (vi) the likelihood of achieving a liquidity event, such as an initial public offering or sale of the Company, given prevailing market conditions; and (vii) precedent transactions involving the Company’s shares. Since the Company’s IPO, the fair value of the underlying common stock is determined by the closing price, on the date of grant, of the Company’s Class A common stock, which is traded publicly on The Nasdaq Global Select Market. Stock Number of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in Years) Aggregate Intrinsic Value (in thousands) Balance—December 31, 2018 38,865,057 $ 0.83 7.9 Options granted 9,518,730 $ 9.15 Options exercised (10,546,987 ) $ 0.75 Options forfeited or expired (1,452,033 ) $ 2.54 Balance—December 31, 2019 36,384,767 $ 2.96 7.6 Exercisable—December 31, 2019 22,327,967 $ 2.19 7.0 Balance—December 31, 2019 36,384,767 $ 2.96 $ 1,266,938 Options granted 14,600 41.19 — — Options exercised (8,753,274 ) 1.83 — — Options forfeited or expired (577,770 ) 4.93 — — Balance—December 31, 2020 27,068,323 3.31 6.70 2,575,069 Exercisable—December 31, 2020 16,545,562 $ 1.39 5.86 $ 1,605,723 As of December 31, 2020, there were 34,759 shares of Class A common stock and 27,033,564 shares of Class B common stock issuable upon the exercise of options outstanding. As of December 31, 2019, there were 20,700 shares of Class A common stock and 36,364,067 shares of Class B common stock issuable upon the exercise of options outstanding. Total compensation cost related to unvested awards not yet recognized was approximately $60.6 million and $90.5 million as of December 31, 2020 and December 31, 2019, respectively. The weighted-average period over which this compensation cost related to unvested employee awards will be recognized is 2.0 years and 2.7 years as of December 31, 2020 and December 31, 2019, respectively. The , , , Restricted Stock Units The following table summarizes the activity for the Company’s unvested RSUs: Shares Weighted-Average Fair Value Aggregate Intrinsic Value (in thousands) Unvested and outstanding balance as of December 31, 2019 $ 647,094 $ 36.08 $ 24,447 Awarded 4,860,097 61.42 — Vested (170,892 ) 36.41 — Forfeited/canceled (169,579 ) 48.24 — Unvested and outstanding balance as of December 31, 2020 5,166,720 $ 59.50 $ 508,612 The Company granted 244,445 and 96,210 restricted shares of Class A common stock in November 2019 and June 2020, respectively, which are subject to service-based vesting conditions over approximately four years. Total compensation cost related to unvested RSUs and restricted shares of common stock not yet recognized was approximately $281.5 million and $30.4 million as of December 31, 2020 and December 31, 2019, respectively. The weighted-average period over which this compensation cost related to unvested RSUs and restricted shares will be recognized is 3.4 years and 3.9 years as of December 31, 2020 and December 31, 2019, respectively. The Company expects to settle RSUs with shares of its Class A common stock. Stock-Based Compensation Stock-based Year Ended December 31, 2020 2019 2018 Cost of revenue $ 1,794 $ 582 $ 287 Research and development 38,008 7,972 1,641 Sales and marketing 20,467 5,538 1,910 General and administrative 14,105 4,942 1,406 Stock-based compensation, net of amounts capitalized 74,374 19,034 5,244 Capitalized stock-based compensation expense 3,404 201 167 Total stock-based compensation expense $ 77,778 $ 19,235 $ 5,411 Common stock purchased pursuant to an early exercise of stock options is not deemed to be outstanding for accounting purposes until those shares vest. The consideration received for an exercise of an option is considered to be a deposit of the exercise price and the related dollar amount is recorded as a liability. The shares issued upon the early exercise of these unvested stock option awards, which are reflected as exercises in the table above, are considered to be legally issued and outstanding on the date of exercise. Upon termination of service, the Company may repurchase unvested shares acquired through early exercise of stock options at a price equal to the price per share paid upon the exercise of such options. The Company has recorded liabilities related to early exercises of 438,750 shares of common stock and 1,239,750 shares of common stock as of December 31, 2020 and December 31, 2019, respectively. Employee Stock Purchase Plan In September 2019, the Board adopted and approved the 2019 ESPP, which became effective on the date of the final prospectus for the Company’s IPO. The ESPP is implemented through a series of offerings under which eligible employees are granted purchase rights to purchase shares of the Company’s Class A common stock on specified dates during such offerings. Under the ESPP, the Company may specify offerings with durations of not more than 27 months and may specify shorter purchase periods within each offering. On each purchase date, eligible employees will purchase the shares at a price per share equal to 85% of the lesser of (1) the fair market value of the Company’s Class A common stock on the first trading day of the offering period, or (2) the fair market value of the Company’s Class A common stock on the purchase date, as defined in the ESPP. The Company recognized $5.0 million and $1.2 million of stock-based compensation expense related to the ESPP during the years ended December 31, 2020, and 2019, respectively. As of December 31, 2020, and 2019, $2.8 million and $3.3 million, respectively has been withheld on behalf of employees for a future purchase under the ESPP due to the timing of payroll deductions. There were no purchases for the year ended December 31, 2019 related to the ESPP. During the year ended December 31, 2020, the Company issued 447,955 shares of Class A common stock under the ESPP. As of December 31, 2020, 9,222,883 shares of Class A common stock remain available for grant under the ESPP. Total compensation cost related to the ESPP not yet recognized was approximately $2.5 million and $1.5 million as of December 31, 2020 and 2019, respectively. The weighted average period over which this compensation cost will be recognized is 0.4 years as of December 31, 2020 and 2019.

Interest Income and Other Incom

Interest Income and Other Income, Net	12 Months Ended
	Dec. 31, 2020
Interest And Other Income [Abstract]
Interest Income and Other Income, Net	14. Interest income and other income, net Interest income and other income, net consist of the following (in thousands): For the Year Ended December 31, 2020 2019 2018 Interest income $ 21,234 $ 4,110 $ 913 Other income (expense), net 751 86 (120 ) Interest income and other income, net $ 21,985 $ 4,196 $ 793

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	15. Income Income — For financial reporting purposes, loss before income taxes, includes the following components (in thousands): December 31, 2020 2019 2018 Domestic $ (32,033 ) $ (18,330 ) $ (11,273 ) Foreign 9,811 2,354 1,033 Loss before income taxes $ (22,222 ) $ (15,976 ) $ (10,240 ) Total 2020 Current Deferred Total Federal $ — $ — $ — State 124 — 124 Foreign 2,239 (38 ) 2,201 Total $ 2,363 $ (38 ) $ 2,325 2019 Current Deferred Total Federal $ — $ — $ — State 126 — 126 Foreign 967 (359 ) 608 Total $ 1,093 $ (359 ) $ 734 2018 Current Deferred Total Federal $ — $ — $ — State (127 ) — (127 ) Foreign 559 90 649 Total $ 432 $ 90 $ 522 Tax Rate Reconciliatio n —Income tax expense was $2.3 million, $0.7 million and $0.5 million for the years ended December 31, 2020 , 2019 and 2018, respectively, and differed from the amounts computed by applying the U.S. federal statutory income tax rate of 21 for the years ended December 31, 2020, 2019 and 2018, to pretax loss from operations as a result of the following (in thousands): December 31, 2020 2019 2018 Income tax expense at federal statutory rate $ (4,667 ) $ (3,355 ) $ (2,151 ) Nondeductible expenses 132 380 452 State taxes (net of federal benefit) 98 100 (100 ) Net change in valuation allowance 51,892 5,043 1,052 Uncertain tax positions 17 23 241 US tax costs on international operations 1,818 201 296 Foreign taxes 126 92 191 Share based compensation deductions (47,032 ) (1,630 ) 541 Return to provision (48 ) (120 ) — Other (11 ) — — Total $ 2,325 $ 734 $ 522 The Company incurred U.S. operating and tax losses, mainly driven by significant equity compensation deductions. These deductions had an impact of $47.0 million on the effective tax rate. The Company also early adopted the provisions of ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU No. 2019-12”) during the year ended December 31, 2020. As a result of the adoption of ASU No. 2019-12, the tax effect of the Company’s loss from continuing operations for the year ended December 31, 2020 was computed without regard to items other than from continuing operations. Prior to early adoption, for the quarter ended June 30, 2020, the taxable temporary difference resulting from the convertible debt issuance provided an additional source of income to support the realizability of the Company's pre-existing deferred tax assets and the Company For the year ended December 31, 2020, the Company has evaluated the available evidence supporting the realization of its deferred tax assets, including the amount and timing of future taxable income, and has determined that it is more likely than not that its net deferred tax assets will not be realized in the United States. Due to uncertainties surrounding the realization of the deferred tax assets, the Company recorded a full valuation allowance against substantially all of its net deferred tax assets. When the Company determines that it will be able to realize some portion or all of its deferred tax assets, an adjustment to its valuation allowance on its deferred tax assets would have the effect of increasing net income in the period such determination is made. On December 21, 2020, Congress passed the Consolidated Appropriations Act, 2021. The act includes the Taxpayer Certainty and Disaster Tax Relief Act of 2020 and the COVID-related Tax Relief Act of 2020, both of which extend many credits and other COVID-19 relief, among other extenders. The Consolidated Appropriations Act is retroactively applied to the original date of the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"). Like the CARES Act, under ASC 740, the effects of new legislation would need to be recognized in the period of enactment. Therefore, the effects of the Consolidated Appropriations Act would need to be accounted for in the year ended December 31, 2020. The Company evaluated the provisions of the Consolidated Appropriations Act and determined that there was no material impact for the year ended December 31, 2020. On March 27, 2020, the CARES Act was enacted and signed into law. The CARES Act makes changes to the U.S. tax code, including, but not limited to: (1) modifications to the business interest deduction limitation for tax years 2019 and 2020; (2) a technical correction of the recovery period of qualified improvement property from 39 to 15 years; and (3) a repeal of the 80% taxable income limitation on the deduction of net operating losses ("NOLs") for tax years beginning before January 1, 2021 as well as a five-year carryback period allowed for NOLs generated in tax years beginning after December 31, 2017 and before January 1, 2021. Under ASC 740, the effects of new legislation would need to be recognized in the period of enactment. Therefore, the effects of the CARES Act would need to be accounted for in the year ended December 31, 2020. The Company evaluated the provisions of the CARES Act and determined that there was no material impact for the year ended December 31, 2020. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). The Tax Act makes broad and complex changes to the U.S. tax code that affected the Company’s financial results for the year ended December 31, 2017, including, but not limited to: (1) requiring a one-time transition tax (payable over eight years) on certain un-repatriated earnings of foreign subsidiaries; (2) a future reduction of the U.S. federal corporate tax rate from 34% to 21% effective January 1, 2018, that reduced the current value of the Company’s deferred tax assets and liabilities; and (3) bonus depreciation that allows for full expensing of qualified property placed in service after September 27, 2017. In addition, the Tax Act establishes new tax laws that may affect the Company’s financial results for the years ending after December 31, 2017, including, but not limited to: (1) a reduction of the U.S. federal income tax rate from 34% to 21%; (2) limitation of the deduction for interest expense; (3) a general elimination of U.S. federal income taxes on dividends from foreign subsidiaries; (4) a new provision designed to tax global intangible low-taxed income; (5) limitations on the deductibility of certain executive compensation; and (6) limitations on the use of Foreign Income Tax Credit to reduce the Company’s income tax liability. Pursuant to the Staff Accounting Bulletin published by the SEC on December 22, 2017, addressing the challenges in accounting for the effects of the Tax Act in the period of enactment, companies reported provisional amounts for those specific income tax effects of the Tax Act for which the accounting was incomplete, but a reasonable estimate could be determined. Those provisional amounts were subject to adjustment during a measurement period of up to one year from the enactment date (a “measurement-period adjustment”). Pursuant to this guidance, the estimated impact of the Tax Act was based on a preliminary review of the new tax law and projected future financial results and was subject to revision based upon further analysis and interpretation of the Tax Act and to the extent that actual results differed from projections available at that time. In 2018, the Company completed its accounting with respect to the Tax Act and did not make any measurement-period adjustments to the initial tax expense of $4.0 million recorded in 2017. Components —The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities at December 31, 2020 and 2019 are presented below (in thousands): December 31, 2020 2019 Deferred tax assets: Net operating losses $ 66,801 $ 14,631 Stock-based compensation 11,820 2,085 Federal withholding tax reserve — 815 Internal use software 2,153 1,746 Lease liability 12,566 10,440 Convertible senior notes - issuance costs 832 — Other 2,632 1,297 Total deferred tax assets $ 96,804 $ 31,014 Less: valuation allowance (33,847 ) (15,205 ) Deferred tax assets, net of valuation allowance $ 62,957 $ 15,809 Deferred tax liabilities: Commissions $ (10,247 ) $ (6,514 ) Right of use asset (11,394 ) (9,210 ) Convertible senior notes (40,478 ) Other (800 ) (85 ) Total deferred tax liabilities $ (62,919 ) $ (15,809 ) Deferred tax assets, net $ 38 $ — The Utilization of the net operating In general, it is the practice and intention of the Company to reinvest the earnings of its non-U.S. subsidiaries Consistent Income Taxes The 2020, 2019 and 2018 (in thousands): December 31, 2020 2019 2018 Beginning balance $ 920 $ 920 $ 563 Increases based on tax positions during the current period — — 357 (Decreases) based on tax positions during the current period (388 ) — — Ending balance $ 532 $ 920 $ 920 The total amount of unrecognized tax The Company’s policy for classifying interest and penalties associated with The total amount of interest and penalties associated with unrecognized income tax benefits is $0.4 million for the years ended December 31, 2020 and 2019. It The Company The Company closed its audit of the U.S., a major tax jurisdiction, for the 2017 tax year during 2020 with no changes noted.

Net (Loss) Income Per Share

Net (Loss) Income Per Share	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Net (Loss) Income Per Share	16. Net (Loss) Income Per Share Basic and diluted net income (loss) per common share is presented in conformity with the two-class method required for participating securities. Immediately prior to the consummation of the Company’s IPO in September 2019, all outstanding shares of convertible preferred stock and common stock were converted into shares of Class B common stock. As a result, Class A and Class B common stock are the only outstanding equity in the Company. Basic and diluted net income (loss) per share is computed using the weighted-average number of common shares of common stock outstanding during the period. The undistributed earnings are allocated based on the contractual participation rights of the Class A and Class B common shares stock as if the earnings for the year have been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the conversion of Class B common stock is assumed in the computation of the diluted net income (loss) per share of Class A common stock, the undistributed earnings are equal to net income (loss) for that computation. The following table presents the calculation of basic and diluted net (loss) income per share (in thousands, except per share data): Year Ended December 31, 2020 2019 2018 Basic net loss per share: Class A Class B Class A Class B Numerator: Net loss $ (13,614 ) $ (10,933 ) $ (1,149 ) $ (15,561 ) $ (10,762 ) Denominator: Weighted average shares used in calculating net loss per share, basic 166,582 133,768 9,611 130,262 70,951 Basic net loss per share $ (0.08 ) $ (0.08 ) $ (0.12 ) $ (0.12 ) $ (0.15 ) Diluted net loss per share: Numerator: Allocation of distributed loss for basic computation $ (13,614 ) $ (10,933 ) $ (1,149 ) $ (15,561 ) $ (10,762 ) Reallocation of undistributed loss as a result of conversion of Class B to Class A shares (10,933 ) — (15,561 ) — — Allocation of undistributed loss $ (24,547 ) $ (10,933 ) $ (16,710 ) $ (15,561 ) $ (10,762 ) Denominator: Number of shares used in basic calculation 166,582 133,768 9,611 130,262 70,951 Weighted average effect of diluted securities: Conversion of Class B to Class A common shares outstanding 133,768 — 130,262 — — Number of shares used in diluted calculation 300,350 133,768 139,873 130,262 70,951 Diluted net loss per share $ (0.08 ) $ (0.08 ) $ (0.12 ) $ (0.12 ) $ (0.15 ) Since the Company was in a loss position for the 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 December 31, 2020 2019 2018 Convertible Preferred Stock $ — $ — $ 179,815 Shares subject to outstanding stock options and restricted stock units 32,235 37,032 38,865 Unvested early exercised stock options 718 1,240 2,096 Shares subject to the 2019 ESPP 141 353 — Shares underlying the conversion spread in the convertible senior notes 608 — — Total $ 33,702 $ 38,625 $ 220,776 The Company uses the treasury stock method for calculating the potential dilutive effect of the conversion spread on diluted net income per share; if any, as the Company currently expects to settle the principal amount of the 2025 Notes in cash, and any excess in shares of the Company’s Class A common stock. The shares of the underlying conversion option for the 2025 Notes were not considered in the calculation of diluted net income per share as the effect would have been anti-dilutive. The effect of the conversion spread becomes dilutive when the average share price for the Company’s Class A common stock exceeds the conversion price of $92.30 per share. The Company entered into Capped Calls in connection with the issuance of the 2025 Notes. The effect of the Capped Calls was also excluded from the calculation of diluted net income per share as the effect of the Capped Calls would have been anti-dilutive. The Capped Calls are expected to partially offset the potential dilution to the Company’s Class A common stock upon any conversion of the 2025 Notes.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	17. Subsequent Events In February 2021, the Company entered into an agreement to acquire Sqreen, Inc, a SaaS based security platform, for approximately $260 million in cash and stock, subject to certain customary adjustments, of which approximately 25% is deferred. In addition, the Company completed the acquisition of Timber Technologies, the producer of a vendor-agnostic and high-performance observability data pipeline. The Company is currently evaluating the purchase price allocation for these transactions. ******

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The
Principles of Consolidation	Principles The r
Initial Public Offering	Initial Public Offering On September 23, 2019, the Company completed its initial public offering (“IPO”), in which the Company issued and sold 24,000,000 shares of its Class A common stock at a public offering price of $27.00 per share, which resulted in net proceeds of $615.6 million after deducting underwriting discounts and commissions. On September 25, 2019, the underwriters exercised their option to purchase an additional 3,600,000 shares of Class A common stock at $27.00 per share, resulting in additional proceeds of $92.3 million, net of underwriters’ discounts and commissions. Immediately prior to the closing of the IPO, all shares of common stock then outstanding were reclassified as Class B common stock and all shares of the convertible preferred stock then outstanding automatically converted into 179,011,431 shares of Class B common stock. The Company incurred $2.0 million of net offering costs in connection with the IPO which were recorded as an offset against IPO proceeds.
Stock Split and Authorized Shares	Stock Split and Authorized Shares On January 2, 2018, the Company’s Board of Directors (the “Board”) and stockholders approved a 4-for-1 stock split of the Company’s then-outstanding common stock and convertible preferred stock was effected without any change in the par value per share. On September 6, 2019, the Board and stockholders approved an amended and restated certificate of incorporation of the Company effecting a 3-for-1 stock split of the Company’s issued and outstanding shares of common stock and convertible preferred stock, and an increase to the authorized shares of the Company’s common stock and convertible preferred stock to 380,000,000 shares and 179,814,912 shares, respectively. The split was effected on September 6, 2019 and without any change in the par value per share. All information related to the Company’s common stock, convertible preferred stock and stock awards has been retroactively adjusted to give effect to 3-for-1 stock split on September 6, 2019. On September 23, 2019, an amended and restated certificate of incorporation of the Company was filed immediately prior to the closing of the IPO authorizing an aggregate of 2,330,000,000 shares of capital stock of the Company, including 2,000,000,000 shares of Class A common stock, 310,000,000 shares of Class B common stock and 20,000,000 shares of preferred stock.
Segment Information	Segment The
Use of Estimates	Use of Estimates The the allowance for credit losses stock-based compensation including the determination of the fair value of the Company’s stock prior to its IPO, fair value of the liability component of the convertible debt,
Foreign Currency Translation	Foreign Currency Translation The ( equity (deficit) Transaction e
Revenue Recognition	Revenue Recognition The Company generates an or multi-year The Company accounts (1) identify r (2) identify t (3) determine e (4) allocate e to the performance obligations in the contract (5) recognize n The Company’s s The transaction price is based on the fixed price for the contracted level of service plus variable consideration for additional optional purchases. Billing periods correspond to the periods over which services are performed and there are no discounts given on the purchase of future services. The Revenue For r The
Deferred Revenue and Remaining Performance Obligations	Deferred Revenue and Remaining Performance Obligations Certain of the Company’s customers pay in advance of satisfaction of performance obligations and other customers with monthly contract terms are billed in arrears on a monthly basis. The Company records contract liabilities to deferred revenue when customers are billed or when the Company receives customer payments in advance of the performance obligations being satisfied on the Company’s contracts. Remaining performance obligations represent the aggregate amount of the transaction price in contracts allocated to performance obligations not delivered, or partially undelivered, as of the end of the reporting period. Remaining performance obligations include unearned revenue, multi-year contracts with future installment payments and certain unfulfilled orders against accepted customer contracts at the end of any given period.
Convertible Senior Notes	Convertible Senior Notes In accounting for the issuance of the Company’s convertible senior notes (the “2025 Notes”), the 2025 Notes were separated into liability and equity components. The carrying amounts of the liability component was calculated by measuring the fair value of similar liabilities that do not have associated convertible features. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the respective 2025 Notes. This difference represents the debt discount that is amortized to interest expense over the contractual terms of the 2025 Notes using the effective interest rate method. The equity component was recorded in additional paid-in capital and is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the debt issuance costs related to the 2025 Notes, the Company allocated the total amount incurred to the liability and equity components of the 2025 Notes in the same proportion as the allocation of the proceeds. Issuance costs attributable to the liability component are being amortized to interest expense over the contractual terms of the 2025 Notes. The issuance costs attributable to the equity component were netted against the equity component in additional paid-in capital.
Cost of Revenue	Cost of Revenue Cost e
Research and Development Costs	Research and Development Research s
Sales and Marketing Costs	Sales and Marketing Sales and marketing primarily
Advertising Costs	Advertising Advertising and
Income Taxes	Income The The
Stock-Based Compensation	Stock-Based The Company recognizes and measures restricted stock units (“RSUs”), and the employee stock purchase plan (the “ESPP”) The Company also has certain options that have performance-based vesting conditions; stock-based compensation expense for such awards is recognized on a straight-line basis from the time the vesting condition is likely to be met through the time the vesting condition has been achieved.
Cash and Cash Equivalents	Cash and Cash Equivalents The
Marketable Securities	Marketable Securities The Company’s marketable securities consist of commercial debt securities, U.S. government treasury securities, and commercial paper. The Company determines the appropriate classification of its marketable securities at the time of purchase and reevaluates such designation at each balance sheet date. The Company has classified and accounted for its marketable securities 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, the Company classifies its marketable securities within current assets on the consolidated balance sheet. Available-for-sale securities are recorded at fair value each reporting period. Premiums and discounts are amortized or accreted over the life of the related available-for-sale security as an adjustment to yield using the effective interest method. Interest income is recognized when earned. Unrealized gains and losses on these marketable securities are presented net of tax and reported as a separate component of accumulated other comprehensive income until realized. Realized gains and losses are determined based on the specific identification method and are reported in Interest income and other income, net in the consolidated statements of operations. The Company periodically evaluates its marketable securities to assess whether an investment’s fair value is less than its amortized cost basis and if the decline in the fair value is attributable to a credit loss. Declines in fair value judged to be related to credit loss are reported in Interest income and other income, net in the consolidated statements of operations.
Restricted Cash	Restricted Restricted
Concentration of Credit Risk	Concentration Financial
Geographical Information- Long Lived Assets	Geographical Information- Long lived assets As
Fair Value of Financial Instruments	Fair Value of Financial The accounting guidance for -tiered Level Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date. Level Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date. The Company’s financial instruments consist of cash equivalents, marketable securities, accounts receivable, accounts payable and accrued expenses. Cash equivalents are stated at amortized cost, which approximates fair value at the balance sheet dates, due to the short period of time to maturity. Marketable securities are recorded at fair value. Accounts receivable, accounts payable, and accrued expenses are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. A
Accounts Receivable and Allowance for Credit Losses	Accounts Receivable and Allowance for Credit Losses Accounts receivable includes billed and unbilled receivables. Trade accounts receivable are recorded at invoiced amounts and do not bear interest. The expectation of collectability is based on a review of credit profiles of customers, contractual terms and conditions, current economic trends, and historical payment experience. The Company regularly reviews the adequacy of the allowance for credit losses by considering the age of each outstanding invoice and the collection history to determine the appropriate amount of allowance for credit losses. Accounts receivable deemed uncollectible are charged against the allowance for credit losses when identified. Unbilled accounts receivable represents revenue recognized on contracts for which billings have not yet been presented to customers because the amounts were earned but not contractually billable as of the balance sheet date, substantially all of which is expected to be billed and collected within one year.
Internal Use Software Development Costs	Internal The Capitalized
Property and Equipment, Net	Property Property
Deferred Contract Costs	Deferred Contract Costs Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. There are no sales commissions earned on renewals The Company determined the period of benefit by taking into consideration the length of terms in its customer contracts, life of the technology and other factors Deferred contract costs are periodically analyzed for impairment. Amortization expense is included in sales and marketing expenses in the accompanying consolidated statements of operations.
Business Combinations	Business Combinations When e
Accounting for Impairment of Long-Lived Assets (Including Goodwill and Intangibles)	Accounting for Long-lived Computers and equipment 3 years Furnitures and fixtures 5 years Leasehold improvements Shorter of lease term or useful life of asset Capitalized software development costs 2 years Intangible assets 3 years The Goodwill
Operating Leases	Operating The Company determines if an arrangement is a lease at inception. Operating lease assets and liabilities are reflected within operating lease assets, operating lease liabilities, current, and operating lease liabilities, non-current, on the consolidated balance sheets. For short-term leases (an initial term of 12 months or less), an operating lease asset and corresponding lease liability are not recorded and the Company records rent expense in its consolidated statements of operations on a straight-line basis over the lease term. Operating lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. Operating lease assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company generally uses its incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. The operating lease assets also include any lease payments made and excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has lease agreements with lease and non-lease components, which are accounted for separately. Prior to the adoption of ASC 842, Leases
Net Income (Loss) Per Share Attributable to Common Shareholders	Net Income Basic
Accounting Pronouncements Recently Adopted	Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments 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 Internal-Use Software In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes
Accounting Pronouncements Not Yet Adopted	Accounting Pronouncements In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity Derivatives and Hedging

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Schedule of Long-lived Assets Amortized Over Estimated Useful Lives	Long-lived Computers and equipment 3 years Furnitures and fixtures 5 years Leasehold improvements Shorter of lease term or useful life of asset Capitalized software development costs 2 years Intangible assets 3 years

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Summary of Available-for-Sale Marketable Securities	The following is a summary of available-for-sale marketable securities, excluding those securities classified within cash and cash equivalents on the consolidated balance sheet as of December 31, 2020 and December 31, 2019 (in thousands): December 31, 2020 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 926,836 $ 1,157 $ (143 ) $ 927,850 Certificates of deposit 47,214 43 (1 ) 47,256 U.S. government treasury securities 108,092 203 (1 ) 108,294 Commercial paper 209,111 32 (11 ) 209,132 Marketable securities $ 1,291,253 $ 1,435 $ (156 ) $ 1,292,532 December 31, 2019 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 80,376 $ 46 $ (5 ) $ 80,417 U.S. government treasury securities 72,467 10 (4 ) 72,473 Commercial paper 23,784 — — 23,784 Marketable securities $ 176,627 $ 56 $ (9 ) $ 176,674
Summary of Fair Values of Available-for-Sale Marketable Securities, by Remaining Contractual Maturity	As of December 31, 2020, the fair values of available-for-sale marketable securities, by remaining contractual maturity, were as follows (in thousands): Due within one year $ 994,178 Due in one year through five years 298,354 Total $ 1,292,532

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present information about the Company’s financial assets and liabilities that have been measured at fair value on a recurring basis as of December 31, 2020 and 2019, and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands): Fair Value Measurement as of December 31, 2020 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 181,743 $ — $ — $ 181,743 Commercial paper — 25,195 — 25,195 Marketable Securities: Corporate debt securities — 927,850 — 927,850 Certificates of deposit — 47,256 — 47,256 U.S. government treasury securities — 108,294 — 108,294 Commercial paper — 209,132 — 209,132 Total financial assets $ 181,743 $ 1,317,727 $ — $ 1,499,470 Fair Value Measurement as of December 31, 2019 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 588,762 $ — $ — $ 588,762 Marketable Securities: Corporate debt securities — 80,417 — 80,417 U.S. government treasury securities — 72,473 — 72,473 Commercial paper — 23,784 — 23,784 Total financial assets $ 588,762 $ 176,674 $ — $ 765,436

Prepaid Expenses and Other Cu_2

Prepaid Expenses and Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid December 31, 2020 December 31, 2019 Hosting $ 7,196 $ 9,180 General prepaid expenses 8,224 5,700 Other receivables 7,836 2,578 Rent 336 821 Marketing 32 516 Restricted cash — 436 Total prepaid expenses and other current assets $ 23,624 $ 19,231

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Components of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): December 31, 2020 December 31, 2019 Computers and equipment $ 11,490 $ 7,536 Furniture and fixtures 5,087 4,804 Leasehold improvements 17,639 16,517 Capitalized software development costs 48,502 24,630 Total property and equipment $ 82,718 $ 53,487 Less: accumulated depreciation and amortization (35,521 ) (20,738 ) Total property and equipment, net $ 47,197 $ 32,749

Acquisition, Intangible Asset_2

Acquisition, Intangible Assets and Goodwill (Tables)	12 Months Ended
	Dec. 31, 2020
Schedule of Intangibles, Net	Intangibles, December 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,331 $ (1,262 ) $ 2,069 3 years December 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,611 ) $ 1,435 2-3 years
Schedule of Future Amortization Expense	As of December 31, 2020, future Amount 2021 $ 1,042 2022 774 2023 253 Total $ 2,069
Schedule of Changes in Carrying Amount of Goodwill	The changes Amount Balance as of December 31, 2019 $ 9,058 Foreign currency translation adjustments 737 2020 acquisition $ 7,814 Balance as of December 31, 2020 $ 17,609
2019 Acquisition
Summary of Aggregate Purchase Consideration and Estimated Fair Values of Assets Acquired and Liabilities	The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed at the date of acquisition were as follows (in thousands): Fair Value Fair value of net assets acquired: Net tangible assets $ 9 Software technology 910 Goodwill 1,285 Total fair value of net assets acquired $ 2,204
2018 Acquisition
Summary of Aggregate Purchase Consideration and Estimated Fair Values of Assets Acquired and Liabilities	The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed Fair Value Fair value of net assets acquired: Net tangible assets (liabilities) $ (536 ) Developed technology 825 Goodwill 1,334 Total fair value of net assets acquired $ 1,623

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Payables And Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Certain prior year amounts have been reclassified for consistency in presentation with the current year presentation. These reclassifications had no effect on the reported results of operations . Accrued December 31, 2020 December 31, 2019 Accrued compensation and commissions $ 22,186 $ 16,256 Accrued expenses 20,008 12,505 Early exercise liability-stock options 599 1,776 Other tax liability and sales tax 12,558 8,209 Total accrued expenses and other current liabilities $ 55,351 $ 38,746

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Net Carrying Amount of Liability and Equity Component of 2025 Notes	The net carrying amount of the liability component of the 2025 Notes was as follows (in thousands): December 31, 2020 Principal $ 747,500 Unamortized debt discount (159,547 ) Unamortized debt issuance costs (12,089 ) Net carrying amount $ 575,864 The net carrying amount of the equity component of the 2025 Notes was as follows (in thousands): December 31, 2020 Debt discount for conversion option $ 177,169 Issuance costs (4,099 ) Net carrying amount $ 173,070
Interest Expense related to 2025 Notes	The following table sets forth the interest expense related to the 2025 Notes for years ended December 31, 2020 (in thousands): Year Ended December 31, 2020 Contractual interest expense $ 540 Amortization of debt discount 17,621 Amortization of issuance costs 1,106 Total $ 19,267

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Summary of Components of Lease Cost Recognized	The Year Ended December 31, 2020 Year Ended December 31, 2019 Operating lease cost (1) $ 17,081 $ 13,636 Variable lease cost (2) — 94 Short-term lease cost 3,717 2,925 1) Includes 2) Primarily
Summary of Supplemental Cash Flow Information and Non-cash Activity	Supplemental Year Ended December 31, 2020 Year Ended December 31, 2019 Cash paid for amounts included in measurement of lease liabilities $ 15,074 $ 9,767 Operating lease assets obtained in exchange for new lease liabilities 17,379 14,618
Summary of Maturities of Lease Liabilities	Maturities Amount 2021 $ 19,072 2022 20,292 2023 18,210 2024 2,572 2025 2,766 Thereafter 12,747 Total lease payments $ 75,659 Less: imputed interest (7,900 ) Present value of lease liabilities $ 67,759
Summary of Weighted Average Remaining Lease Term and Discount Rate	Weighted December 31, 2020 December 31, 2019 Weighted average remaining lease term (years) 4.4 4.0 Weighted average discount rate 4.71 % 4.98 %

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Schedule of Revenue by Geographic Area	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 December 31, 2020 2019 2018 North America $ 449,899 $ 272,190 $ 150,945 International 153,567 90,590 47,132 Total $ 603,466 $ 362,780 $ 198,077
Schedule of Deferred Contract Costs	The following table represents a rollforward of the Company’s deferred contract costs (in thousands): Amount Balance as of December 31, 2017 $ 4,755 Additions to deferred contract costs 8,925 Amortization of deferred contract costs (2,671 ) Balance as of December 31, 2018 $ 11,009 Additions to deferred contract costs 20,146 Amortization of deferred contract costs (5,400 ) Balance as of December 31, 2019 $ 25,755 Additions to deferred contract costs 25,080 Amortization of deferred contract costs (10,447 ) Balance as of December 31, 2020 $ 40,388

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Summary of Reserved Shares of Common Stock for Future Issuance	As of December 31, 2020 and 2019, December 31, 2020 2019 Options and RSU's outstanding 32,235,043 37,031,861 Shares available for future option and RSU grants 42,797,432 31,729,237 Shares available subject to the 2019 ESPP 9,222,883 6,725,000 84,255,358 75,486,098
Summary of Fair Value Assumptions	The following Year Ended December 31, 2020 2019 2018 Expected volatility 38.9% 38.9% - 39.5% 38.4% - 39.0% Risk-free interest rate 1.7% 1.4% - 2.6% 2.6% - 3.0% Expected dividend yield —% —% —% Expected term (in years) 6.1 5.2 - 6.3 5.8 - 6.1 Fair value of common stock $ 41.19 $6.16 - $38.21 $2.23 - $5.63
Summary of Stock Option Activity	Stock Number of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in Years) Aggregate Intrinsic Value (in thousands) Balance—December 31, 2018 38,865,057 $ 0.83 7.9 Options granted 9,518,730 $ 9.15 Options exercised (10,546,987 ) $ 0.75 Options forfeited or expired (1,452,033 ) $ 2.54 Balance—December 31, 2019 36,384,767 $ 2.96 7.6 Exercisable—December 31, 2019 22,327,967 $ 2.19 7.0 Balance—December 31, 2019 36,384,767 $ 2.96 $ 1,266,938 Options granted 14,600 41.19 — — Options exercised (8,753,274 ) 1.83 — — Options forfeited or expired (577,770 ) 4.93 — — Balance—December 31, 2020 27,068,323 3.31 6.70 2,575,069 Exercisable—December 31, 2020 16,545,562 $ 1.39 5.86 $ 1,605,723
Summary of Activity for Unvested RSUs	The following table summarizes the activity for the Company’s unvested RSUs: Shares Weighted-Average Fair Value Aggregate Intrinsic Value (in thousands) Unvested and outstanding balance as of December 31, 2019 $ 647,094 $ 36.08 $ 24,447 Awarded 4,860,097 61.42 — Vested (170,892 ) 36.41 — Forfeited/canceled (169,579 ) 48.24 — Unvested and outstanding balance as of December 31, 2020 5,166,720 $ 59.50 $ 508,612
Summary of Stock-based Compensation Expense	Stock-based Year Ended December 31, 2020 2019 2018 Cost of revenue $ 1,794 $ 582 $ 287 Research and development 38,008 7,972 1,641 Sales and marketing 20,467 5,538 1,910 General and administrative 14,105 4,942 1,406 Stock-based compensation, net of amounts capitalized 74,374 19,034 5,244 Capitalized stock-based compensation expense 3,404 201 167 Total stock-based compensation expense $ 77,778 $ 19,235 $ 5,411

Interest Income and Other Inc_2

Interest Income and Other Income, Net (Tables)	12 Months Ended
	Dec. 31, 2020
Interest And Other Income [Abstract]
Schedule of Interest Income and Other Income, Net	Interest income and other income, net consist of the following (in thousands): For the Year Ended December 31, 2020 2019 2018 Interest income $ 21,234 $ 4,110 $ 913 Other income (expense), net 751 86 (120 ) Interest income and other income, net $ 21,985 $ 4,196 $ 793

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components of Loss before Income Taxes	Income — For financial reporting purposes, loss before income taxes, includes the following components (in thousands): December 31, 2020 2019 2018 Domestic $ (32,033 ) $ (18,330 ) $ (11,273 ) Foreign 9,811 2,354 1,033 Loss before income taxes $ (22,222 ) $ (15,976 ) $ (10,240 )
Summary of Income Taxes Allocated to Operations	Total 2020 Current Deferred Total Federal $ — $ — $ — State 124 — 124 Foreign 2,239 (38 ) 2,201 Total $ 2,363 $ (38 ) $ 2,325 2019 Current Deferred Total Federal $ — $ — $ — State 126 — 126 Foreign 967 (359 ) 608 Total $ 1,093 $ (359 ) $ 734 2018 Current Deferred Total Federal $ — $ — $ — State (127 ) — (127 ) Foreign 559 90 649 Total $ 432 $ 90 $ 522
Summary of Tax Rate Reconciliation	Tax Rate Reconciliatio n —Income tax expense was $2.3 million, $0.7 million and $0.5 million for the years ended December 31, 2020 , 2019 and 2018, respectively, and differed from the amounts computed by applying the U.S. federal statutory income tax rate of 21 for the years ended December 31, 2020, 2019 and 2018, to pretax loss from operations as a result of the following (in thousands): December 31, 2020 2019 2018 Income tax expense at federal statutory rate $ (4,667 ) $ (3,355 ) $ (2,151 ) Nondeductible expenses 132 380 452 State taxes (net of federal benefit) 98 100 (100 ) Net change in valuation allowance 51,892 5,043 1,052 Uncertain tax positions 17 23 241 US tax costs on international operations 1,818 201 296 Foreign taxes 126 92 191 Share based compensation deductions (47,032 ) (1,630 ) 541 Return to provision (48 ) (120 ) — Other (11 ) — — Total $ 2,325 $ 734 $ 522 The Company incurred U.S. operating and tax losses, mainly driven by significant equity compensation deductions. These deductions had an impact of $47.0 million on the effective tax rate. The Company also early adopted the provisions of ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU No. 2019-12”) during the year ended December 31, 2020. As a result of the adoption of ASU No. 2019-12, the tax effect of the Company’s loss from continuing operations for the year ended December 31, 2020 was computed without regard to items other than from continuing operations. Prior to early adoption, for the quarter ended June 30, 2020, the taxable temporary difference resulting from the convertible debt issuance provided an additional source of income to support the realizability of the Company's pre-existing deferred tax assets and the Company For the year ended December 31, 2020, the Company has evaluated the available evidence supporting the realization of its deferred tax assets, including the amount and timing of future taxable income, and has determined that it is more likely than not that its net deferred tax assets will not be realized in the United States. Due to uncertainties surrounding the realization of the deferred tax assets, the Company recorded a full valuation allowance against substantially all of its net deferred tax assets. When the Company determines that it will be able to realize some portion or all of its deferred tax assets, an adjustment to its valuation allowance on its deferred tax assets would have the effect of increasing net income in the period such determination is made. On December 21, 2020, Congress passed the Consolidated Appropriations Act, 2021. The act includes the Taxpayer Certainty and Disaster Tax Relief Act of 2020 and the COVID-related Tax Relief Act of 2020, both of which extend many credits and other COVID-19 relief, among other extenders. The Consolidated Appropriations Act is retroactively applied to the original date of the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"). Like the CARES Act, under ASC 740, the effects of new legislation would need to be recognized in the period of enactment. Therefore, the effects of the Consolidated Appropriations Act would need to be accounted for in the year ended December 31, 2020. The Company evaluated the provisions of the Consolidated Appropriations Act and determined that there was no material impact for the year ended December 31, 2020. On March 27, 2020, the CARES Act was enacted and signed into law. The CARES Act makes changes to the U.S. tax code, including, but not limited to: (1) modifications to the business interest deduction limitation for tax years 2019 and 2020; (2) a technical correction of the recovery period of qualified improvement property from 39 to 15 years; and (3) a repeal of the 80% taxable income limitation on the deduction of net operating losses ("NOLs") for tax years beginning before January 1, 2021 as well as a five-year carryback period allowed for NOLs generated in tax years beginning after December 31, 2017 and before January 1, 2021. Under ASC 740, the effects of new legislation would need to be recognized in the period of enactment. Therefore, the effects of the CARES Act would need to be accounted for in the year ended December 31, 2020. The Company evaluated the provisions of the CARES Act and determined that there was no material impact for the year ended December 31, 2020. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). The Tax Act makes broad and complex changes to the U.S. tax code that affected the Company’s financial results for the year ended December 31, 2017, including, but not limited to: (1) requiring a one-time transition tax (payable over eight years) on certain un-repatriated earnings of foreign subsidiaries; (2) a future reduction of the U.S. federal corporate tax rate from 34% to 21% effective January 1, 2018, that reduced the current value of the Company’s deferred tax assets and liabilities; and (3) bonus depreciation that allows for full expensing of qualified property placed in service after September 27, 2017. In addition, the Tax Act establishes new tax laws that may affect the Company’s financial results for the years ending after December 31, 2017, including, but not limited to: (1) a reduction of the U.S. federal income tax rate from 34% to 21%; (2) limitation of the deduction for interest expense; (3) a general elimination of U.S. federal income taxes on dividends from foreign subsidiaries; (4) a new provision designed to tax global intangible low-taxed income; (5) limitations on the deductibility of certain executive compensation; and (6) limitations on the use of Foreign Income Tax Credit to reduce the Company’s income tax liability. Pursuant to the Staff Accounting Bulletin published by the SEC on December 22, 2017, addressing the challenges in accounting for the effects of the Tax Act in the period of enactment, companies reported provisional amounts for those specific income tax effects of the Tax Act for which the accounting was incomplete, but a reasonable estimate could be determined. Those provisional amounts were subject to adjustment during a measurement period of up to one year from the enactment date (a “measurement-period adjustment”). Pursuant to this guidance, the estimated impact of the Tax Act was based on a preliminary review of the new tax law and projected future financial results and was subject to revision based upon further analysis and interpretation of the Tax Act and to the extent that actual results differed from projections available at that time. In 2018, the Company completed its accounting with respect to the Tax Act and did not make any measurement-period adjustments to the initial tax expense of $4.0 million recorded in 2017.
Components of Deferred Tax Assets and Liabilities	Components —The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities at December 31, 2020 and 2019 are presented below (in thousands): December 31, 2020 2019 Deferred tax assets: Net operating losses $ 66,801 $ 14,631 Stock-based compensation 11,820 2,085 Federal withholding tax reserve — 815 Internal use software 2,153 1,746 Lease liability 12,566 10,440 Convertible senior notes - issuance costs 832 — Other 2,632 1,297 Total deferred tax assets $ 96,804 $ 31,014 Less: valuation allowance (33,847 ) (15,205 ) Deferred tax assets, net of valuation allowance $ 62,957 $ 15,809 Deferred tax liabilities: Commissions $ (10,247 ) $ (6,514 ) Right of use asset (11,394 ) (9,210 ) Convertible senior notes (40,478 ) Other (800 ) (85 ) Total deferred tax liabilities $ (62,919 ) $ (15,809 ) Deferred tax assets, net $ 38 $ —
Summary of Changes in Gross Amount of Unrecognized Tax Benefits	The 2020, 2019 and 2018 (in thousands): December 31, 2020 2019 2018 Beginning balance $ 920 $ 920 $ 563 Increases based on tax positions during the current period — — 357 (Decreases) based on tax positions during the current period (388 ) — — Ending balance $ 532 $ 920 $ 920

Net (Loss) Income Per Share (Ta

Net (Loss) Income Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Net (Loss) Income Per Share	The following table presents the calculation of basic and diluted net (loss) income per share (in thousands, except per share data): Year Ended December 31, 2020 2019 2018 Basic net loss per share: Class A Class B Class A Class B Numerator: Net loss $ (13,614 ) $ (10,933 ) $ (1,149 ) $ (15,561 ) $ (10,762 ) Denominator: Weighted average shares used in calculating net loss per share, basic 166,582 133,768 9,611 130,262 70,951 Basic net loss per share $ (0.08 ) $ (0.08 ) $ (0.12 ) $ (0.12 ) $ (0.15 ) Diluted net loss per share: Numerator: Allocation of distributed loss for basic computation $ (13,614 ) $ (10,933 ) $ (1,149 ) $ (15,561 ) $ (10,762 ) Reallocation of undistributed loss as a result of conversion of Class B to Class A shares (10,933 ) — (15,561 ) — — Allocation of undistributed loss $ (24,547 ) $ (10,933 ) $ (16,710 ) $ (15,561 ) $ (10,762 ) Denominator: Number of shares used in basic calculation 166,582 133,768 9,611 130,262 70,951 Weighted average effect of diluted securities: Conversion of Class B to Class A common shares outstanding 133,768 — 130,262 — — Number of shares used in diluted calculation 300,350 133,768 139,873 130,262 70,951 Diluted net loss per share $ (0.08 ) $ (0.08 ) $ (0.12 ) $ (0.12 ) $ (0.15 )
Schedule of Potentially Dilutive Securities not Included in Diluted Per Share Calculations	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 December 31, 2020 2019 2018 Convertible Preferred Stock $ — $ — $ 179,815 Shares subject to outstanding stock options and restricted stock units 32,235 37,032 38,865 Unvested early exercised stock options 718 1,240 2,096 Shares subject to the 2019 ESPP 141 353 — Shares underlying the conversion spread in the convertible senior notes 608 — — Total $ 33,702 $ 38,625 $ 220,776

Organization and Description _2

Organization and Description of Business - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Date of Incorporation	Jun. 4, 2010

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	Sep. 25, 2019USD ($)$ / sharesshares	Sep. 23, 2019USD ($)$ / sharesshares	Sep. 06, 2019shares	Jan. 02, 2018	Dec. 31, 2020USD ($)Segmentshares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)	Jan. 01, 2021USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs					$ (421,000)	$ 706,317,000
Stock split, conversion ratio			0.333	0.25
Common stock, shares authorized | shares		2,330,000,000	380,000,000
Preferred stock, shares authorized | shares		20,000,000
Number of operating segment | Segment					1
Number of reportable segment | Segment					1
Deferred contract costs amortization period					4 years
Sales commissions related to renewals					$ 0
Impairment of goodwill					0	0	$ 0
Decrease in balance of accumulated deficit					$ 148,163,000	$ 123,616,000
ASU No. 2016-13
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted					true
Change in Accounting Principle, Accounting Standards Update, Adoption Date					Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect					true
ASU No. 2018-15
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted					true
Change in Accounting Principle, Accounting Standards Update, Adoption Date					Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect					true
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Extensible List]					us-gaap:AccountingStandardsUpdate201815ProspectiveMember
ASU No. 2019-12
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect					true
Change In Accounting Principle Accounting Standards Update Early Adoption					true
ASU No. 2020-06 | Subsequent Event
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Decrease in balance of accumulated deficit								$ 16,800,000
Capitalized Software Development Costs
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, useful lives					2 years
United States
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of long lived assets					68.00%	70.00%
Outside of United States
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of long lived assets					32.00%	30.00%
Sales and Marketing
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Advertising costs					$ 21,600,000	$ 9,500,000	$ 8,300,000
Initial Public Offering
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Net offering costs					$ 2,000,000
Class A Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Proceeds from initial public offering, net of underwriting discounts and commissions and other offering costs		$ 615,600,000
Common stock, shares authorized | shares		2,000,000,000			2,000,000,000	2,000,000,000
Class A Common Stock | Initial Public Offering
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, shares issued | shares		24,000,000
Common stock offering price | $ / shares		$ 27
Class A Common Stock | Underwriters
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, shares issued | shares	3,600,000
Common stock offering price | $ / shares	$ 27
Net proceeds from common stock shares issued	$ 92,300,000
Class B Common Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Common stock, shares authorized | shares		310,000,000			310,000,000	310,000,000
Class B Common Stock | Initial Public Offering
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Convertible preferred stock converted into common stock | shares		179,011,431
Convertible Preferred Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Convertible preferred stock, shares authorized | shares			179,814,912

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Long-lived Assets Amortized Over Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2020
Acquired Finite Lived Intangible Assets [Line Items]
Intangible assets, useful life	3 years
Computers and Equipment
Acquired Finite Lived Intangible Assets [Line Items]
Property and equipment, useful lives	3 years
Furnitures and Fixtures
Acquired Finite Lived Intangible Assets [Line Items]
Property and equipment, useful lives	5 years
Leasehold Improvements
Acquired Finite Lived Intangible Assets [Line Items]
Leasehold improvements, useful life	Shorter of lease term or useful life of asset
Capitalized Software Development Costs
Acquired Finite Lived Intangible Assets [Line Items]
Property and equipment, useful lives	2 years

Marketable Securities - Summary

Marketable Securities - Summary of Available-for-sale Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	$ 1,291,253	$ 176,627
Marketable securities, Unrealized Gain	1,435	56
Marketable securities, Unrealized Losses	(156)	(9)
Marketable securities, Fair Value	1,292,532	176,674
Commercial Debt Securities
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	926,836	80,376
Marketable securities, Unrealized Gain	1,157	46
Marketable securities, Unrealized Losses	(143)	(5)
Marketable securities, Fair Value	927,850	80,417
Certificates of Deposit
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	47,214
Marketable securities, Unrealized Gain	43
Marketable securities, Unrealized Losses	(1)
Marketable securities, Fair Value	47,256
U.S. Government Treasury Securities
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	108,092	72,467
Marketable securities, Unrealized Gain	203	10
Marketable securities, Unrealized Losses	(1)	(4)
Marketable securities, Fair Value	108,294	72,473
Commercial Paper
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	209,111	23,784
Marketable securities, Unrealized Gain	32
Marketable securities, Unrealized Losses	(11)
Marketable securities, Fair Value	$ 209,132	$ 23,784

Marketable Securities - Summa_2

Marketable Securities - Summary of Fair Values of Available-for-Sale Marketable Securities, by Remaining Contractual Maturity (Details) $ in Thousands	Dec. 31, 2020USD ($)
Investments Debt And Equity Securities [Abstract]
Due within one year	$ 994,178
Due in one year through five years	298,354
Total	$ 1,292,532

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial Assets:
Marketable securities	$ 1,292,532	$ 176,674
Fair Value, Recurring
Financial Assets:
Total financial assets	1,499,470	765,436
Fair Value, Recurring | Money Market Funds
Financial Assets:
Cash equivalents	181,743	588,762
Fair Value, Recurring | Commercial Paper
Financial Assets:
Cash equivalents	25,195
Marketable securities	209,132	23,784
Fair Value, Recurring | Corporate Debt Securities
Financial Assets:
Marketable securities	927,850	80,417
Fair Value, Recurring | U.S. Government Treasury Securities
Financial Assets:
Marketable securities	108,294	72,473
Fair Value, Recurring | Certificates of Deposit
Financial Assets:
Marketable securities	47,256
Fair Value, Recurring | Level 1
Financial Assets:
Total financial assets	181,743	588,762
Fair Value, Recurring | Level 1 | Money Market Funds
Financial Assets:
Cash equivalents	181,743	588,762
Fair Value, Recurring | Level 2
Financial Assets:
Total financial assets	1,317,727	176,674
Fair Value, Recurring | Level 2 | Commercial Paper
Financial Assets:
Cash equivalents	25,195
Marketable securities	209,132	23,784
Fair Value, Recurring | Level 2 | Corporate Debt Securities
Financial Assets:
Marketable securities	927,850	80,417
Fair Value, Recurring | Level 2 | U.S. Government Treasury Securities
Financial Assets:
Marketable securities	108,294	$ 72,473
Fair Value, Recurring | Level 2 | Certificates of Deposit
Financial Assets:
Marketable securities	$ 47,256

Prepaid Expenses and Other Cu_3

Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Prepaid Expense And Other Assets Current [Abstract]
Hosting	$ 7,196	$ 9,180
General prepaid expenses	8,224	5,700
Other receivables	7,836	2,578
Rent	336	821
Marketing	32	516
Restricted cash		436
Total prepaid expenses and other current assets	$ 23,624	$ 19,231

Property and Equipment, Net - C

Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Total property and equipment	$ 82,718	$ 53,487
Less: accumulated depreciation and amortization	(35,521)	(20,738)
Total property and equipment, net	47,197	32,749
Computers and Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	11,490	7,536
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	5,087	4,804
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	17,639	16,517
Capitalized Software Development Costs
Property Plant And Equipment [Line Items]
Total property and equipment	$ 48,502	$ 24,630

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Depreciation and amortization expense	$ 14.5	$ 11.6	$ 5.5

Acquisition, Intangible Asset_3

Acquisition, Intangible Assets and Goodwill - Additional Information (Details) - USD ($) $ in Thousands	Nov. 06, 2019	Sep. 28, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquisition Intangible Assets And Goodwill [Line Items]
Goodwill			$ 17,609	$ 9,058
Cash consideration			2,363	2,138	$ 1,618
Intangible amortization expense			900	$ 800	$ 500
2020 Acquisition
Acquisition Intangible Assets And Goodwill [Line Items]
Purchase price allocated to estimated fair value of intangible assets			1,500
Goodwill			$ 7,800
2019 Acquisition
Acquisition Intangible Assets And Goodwill [Line Items]
Goodwill	$ 1,285
Cash consideration	$ 2,200
2018 Acquisition
Acquisition Intangible Assets And Goodwill [Line Items]
Goodwill		$ 1,334
Cash consideration		1,600
Transaction costs		$ 100

Acquisition, Intangible Asset_4

Acquisition, Intangible Assets and Goodwill - Summary of Aggregate Purchase Consideration and Estimated Fair Values of Assets Acquired and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Nov. 06, 2019	Sep. 28, 2018
Fair value of net assets acquired:
Goodwill	$ 17,609	$ 9,058
2019 Acquisition
Fair value of net assets acquired:
Net tangible assets			$ 9
Software technology			910
Goodwill			1,285
Total fair value of net assets acquired			$ 2,204
2018 Acquisition
Fair value of net assets acquired:
Net tangible assets (liabilities)				$ (536)
Developed technology				825
Goodwill				1,334
Total fair value of net assets acquired				$ 1,623

Acquisition, Intangible Asset_5

Acquisition, Intangible Assets and Goodwill - Schedule of Intangibles, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 2,069	$ 1,435
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,331	3,046
Accumulated Amortization	(1,262)	(1,611)
Net Carrying Amount	$ 2,069	$ 1,435
Amortization Period	3 years
Developed Technology | Minimum
Finite Lived Intangible Assets [Line Items]
Amortization Period		2 years
Developed Technology | Maximum
Finite Lived Intangible Assets [Line Items]
Amortization Period		3 years

Acquisition, Intangible Asset_6

Acquisition, Intangible Assets and Goodwill - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 1,042
2022	774
2023	253
Net Carrying Amount	$ 2,069	$ 1,435

Acquisition, Intangible Asset_7

Acquisition, Intangible Assets and Goodwill - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill beginning balance	$ 9,058
Foreign currency translation adjustments	737
2020 acquisition	7,814
Goodwill ending balance	$ 17,609

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued compensation and commissions	$ 22,186	$ 16,256
Accrued expenses	20,008	12,505
Early exercise liability-stock options	599	1,776
Other tax liability and sales tax	12,558	8,209
Total accrued expenses and other current liabilities	$ 55,351	$ 38,746

Convertible Senior Notes - Addi

Convertible Senior Notes - Additional Information (Details) - 0.125% Convertible Senior Notes due 2025 $ / shares in Units, shares in Millions	Jun. 02, 2020USD ($)	Dec. 31, 2020USD ($)d$ / sharesshares
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 747,500,000	$ 747,500,000
Debt instrument, interest rate	0.125%
Debt instrument, net proceeds from sale of notes	$ 730,200,000
Debt instrument, date of first required payment	Dec. 15, 2020
Debt instrument, maturity date	Jun. 15, 2025
Debt instrument, payment terms		The 2025 Notes bear interest at a rate of 0.125% per year, payable semiannually in arrears on June 15 and December 15 of each year, beginning on December 15, 2020.
Debt Instrument, frequency of interest payment		semiannually
Debt instrument, principal amount denomination used in conversion		$ 100
Debt instrument, convertible carrying amount of equity component		177,169,000
Debt issuance costs		17,300,000
Issuance cost attributable to liability component		13,200,000
Issuance cost attributable to equity component		$ 4,099,000
Debt instrument, effective interest rate		5.97%
Debt instrument, estimated fair value		$ 981,700,000
Initial strike price per share of capped calls | $ / shares		$ 92.30
Initial cap price per share of capped calls | $ / shares		$ 151.04
Cost incurred to purchase capped calls		$ 89,600,000
Redemption, On or After June 20, 2023, and Prior to 31st Scheduled Trading Day
Debt Instrument [Line Items]
Debt instrument redemption price percentage of principal amount redeemed		100.00%
Class A Common Stock
Debt Instrument [Line Items]
Common stock covered under capped calls | shares		8.1
Class A Common Stock | Redemption, On or After June 20, 2023, and Prior to 31st Scheduled Trading Day
Debt Instrument [Line Items]
Debt instrument, trading days | d		20
Debt instrument, consecutive trading days | d		30
Class A Common Stock | Minimum | Redemption, On or After June 20, 2023, and Prior to 31st Scheduled Trading Day
Debt Instrument [Line Items]
Debt instrument, threshold percentage of conversion price		130.00%
Conversion Preceding March 15, 2025, Scenario One
Debt Instrument [Line Items]
Debt instrument, trading days | d		20
Debt instrument, consecutive trading days | d		30
Debt instrument, threshold percentage of conversion price		130.00%
Conversion Preceding March 15, 2025, Scenario Two
Debt Instrument [Line Items]
Debt instrument, consecutive trading days | d		10
Number of consecutive business days after any five consecutive trading day period during the note measurement period | d		5
Debt instrument, principal amount denomination used in conversion		$ 1,000
Debt instrument, convertible, threshold maximum percentage of product of last reported sale price of common stock		98.00%
Conversion, On or After March 15, 2025
Debt Instrument [Line Items]
Debt instrument, principal amount denomination used in conversion		$ 1,000
Debt instrument, conversion price per share | $ / shares		$ 92.30
Conversion, On or After March 15, 2025 | Class A Common Stock
Debt Instrument [Line Items]
Debt instrument, principal amount denomination used in conversion		$ 1,000
Debt instrument, conversion ratio		10.8338
Debt instrument, conversion price per share | $ / shares		$ 92.30

Convertible Senior Notes - Summ

Convertible Senior Notes - Summary of Net Carrying Amount of Liability Component of 2025 Notes (Details) - USD ($)	Dec. 31, 2020	Jun. 02, 2020
Debt Instrument [Line Items]
Net carrying amount	$ 575,864,000
0.125% Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Principal	747,500,000	$ 747,500,000
Unamortized debt discount	(159,547,000)
Unamortized debt issuance costs	(12,089,000)
Net carrying amount	$ 575,864,000

Convertible Senior Notes - Su_2

Convertible Senior Notes - Summary of Net Carrying Amount of Equity Component of 2025 Notes (Details) - 0.125% Convertible Senior Notes due 2025 $ in Thousands	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Debt discount for conversion option	$ 177,169
Issuance costs	(4,099)
Net carrying amount	$ 173,070

Convertible Senior Notes - Inte

Convertible Senior Notes - Interest Expense related to 2025 Notes (Details) - 0.125% Convertible Senior Notes due 2025 $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Contractual interest expense	$ 540
Amortization of debt discount	17,621
Amortization of issuance costs	1,106
Total	$ 19,267

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 31, 2016	Jan. 31, 2015
Commitments And Contingencies [Line Items]
Purchase commitments	$ 184,200,000
Rent expense	20,800,000	$ 16,700,000	$ 10,000,000
Sublease income	1,000,000	1,000,000	$ 700,000
Contingent federal payroll tax liability				$ 5,400,000	$ 5,000,000
Benefit on federal payroll tax liability	5,600,000	5,000,000
Matching contributions to the 401(k) plan	$ 0	$ 0
Minimum
Commitments And Contingencies [Line Items]
Noncancelable operating leases	2021
Maximum
Commitments And Contingencies [Line Items]
Noncancelable operating leases	2029

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Lessee Lease Description [Line Items]
Operating lease, option to terminate	option to terminate a lease early within three years
Lessee, Operating Lease, Existence of Option to Terminate [true false]	true
Lease, Practical Expedient, Lessor Single Lease Component [true false]	true
Lessee, operating lease, lease not yet commenced, description	As of December 31, 2020, the Company had one additional operating lease that had not yet commenced, which is excluded from the table above. The operating lease will commence in fiscal year 2021 and had $19.0 million of undiscounted future payments with a lease term of 7.75 years.
Undiscounted future payments	$ 75,659
Operating Lease Not Yet Commenced
Lessee Lease Description [Line Items]
Lessee, operating lease, lease not yet commenced, term of contract	7 years 9 months
Lessee operating lease commencing period	2021
Undiscounted future payments	$ 19,000
Minimum
Lessee Lease Description [Line Items]
Noncancelable operating lease expiration period	2021
Maximum
Lessee Lease Description [Line Items]
Noncancelable operating lease expiration period	2029
Operating lease, renewal term	5 years
Operating lease, termination term	3 years

Leases - Summary of Components

Leases - Summary of Components of Lease Cost Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 17,081	$ 13,636
Variable lease cost		94
Short-term lease cost	$ 3,717	$ 2,925

Leases - Summary of Component_2

Leases - Summary of Components of Lease Cost Recognized (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, non-cash lease expense	$ 14	$ 10.4

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information and Non-cash Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Cash paid for amounts included in measurement of lease liabilities	$ 15,074	$ 9,767
Operating lease assets obtained in exchange for new lease liabilities	$ 17,379	$ 14,618

Leases - Summary of Maturities

Leases - Summary of Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2020USD ($)
Leases [Abstract]
2021	$ 19,072
2022	20,292
2023	18,210
2024	2,572
2025	2,766
Thereafter	12,747
Total lease payments	75,659
Less: imputed interest	(7,900)
Present value of lease liabilities	$ 67,759

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Term and Discount Rate (Details)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Weighted average remaining lease term (years)	4 years 4 months 24 days	4 years
Weighted average discount rate	4.71%	4.98%

Revenue - Schedule of Revenue b

Revenue - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	$ 603,466	$ 362,780	$ 198,077
North America
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	449,899	272,190	150,945
International
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	$ 153,567	$ 90,590	$ 47,132

Revenue - Additional Informatio

Revenue - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Customer	Dec. 31, 2019USD ($)Customer	Dec. 31, 2018USD ($)Customer
Disaggregation Of Revenue [Line Items]
Unbilled accounts receivable	$ 20.1	$ 14.4
Allowance for doubtful accounts receivable deemed uncollectible	1.6	0.9
Revenue recognized	126.8	71	$ 37.1
Deferred contract costs	40.4	25.8
Amortization expense	$ 10.4	$ 5.4	$ 2.7
Outside of United States
Disaggregation Of Revenue [Line Items]
Number of major customers representing greater than 10% | Customer	0	0	0

Revenue - Additional Informat_2

Revenue - Additional Information (Details 1) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations		$ 243.8
Remaining performance obligations, expected to recognize period		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations	$ 434.1
Remaining performance obligations, expected to recognize period	1 year

Revenue - Schedule of Deferred

Revenue - Schedule of Deferred Contract Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Capitalized Contract Cost [Abstract]
Beginning Balance	$ 25,755	$ 11,009	$ 4,755
Additions to deferred contract costs	25,080	20,146	8,925
Amortization of deferred contract costs	(10,447)	(5,400)	(2,671)
Ending Balance	$ 40,388	$ 25,755	$ 11,009

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands	1 Months Ended			12 Months Ended
	Jun. 30, 2020shares	Nov. 30, 2019shares	Sep. 30, 2019	Dec. 31, 2020USD ($)Vote$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Sep. 23, 2019shares	Sep. 06, 2019shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of voting rights entitled to stockholders per share				Each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share.
Common stock, shares authorized							2,330,000,000	380,000,000
Stock issuable upon the exercise of options outstanding				27,068,323	36,384,767	38,865,057
Weighted average grant-date fair value of options granted | $ / shares				$ 41.19
Proceeds from exercise of stock options | $				$ 15,985	$ 7,899	$ 7,782
Share-based payment arrangement, expense | $				74,374	19,034	$ 5,244
Amounts withheld on behalf of employees for a future purchase | $				$ 1,040
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service based vesting period				4 years
Service period				4 years
Total compensation cost related to unvested awards not yet recognized | $				$ 60,600	$ 90,500
Weighted average period over compensation cost related to unvested employee awards				2 years	2 years 8 months 12 days
Weighted average grant-date fair value of options granted | $ / shares				$ 16.55	$ 8.69	$ 2.48
Proceeds from exercise of stock options | $				$ 16,000	$ 7,900	$ 7,800
Intrinsic value of options exercised | $				554,300	121,300	36,400
Aggregate fair value of options vested | $				$ 27,600	$ 10,800	$ 3,500
Early exercise of common stock				438,750	1,239,750
RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period over compensation cost related to unvested employee awards				3 years 4 months 24 days	3 years 10 months 24 days
Common stock granted				4,860,097
Total compensation cost related to unvested awards and ESPP not yet recognized | $				$ 281,500	$ 30,400
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair value of options granted | $ / shares					$ 38.21	$ 5.63
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair value of options granted | $ / shares					$ 6.16	$ 2.23
2019 Equity Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant award				86,086,351
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period over compensation cost related to unvested employee awards				4 months 24 days	4 months 24 days
Total compensation cost related to unvested awards and ESPP not yet recognized | $				$ 2,500	$ 1,500
Percentage of purchase the shares at a price per share			85.00%
Share-based payment arrangement, expense | $				5,000	1,200
Amounts withheld on behalf of employees for a future purchase | $				$ 2,800	$ 3,300
Issuance of common stock under the employee stock purchase plan				0
Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of voting rights entitled to stockholders per share | Vote				1
Common stock, shares authorized				2,000,000,000	2,000,000,000		2,000,000,000
Common stock, par value | $ / shares				$ 0.00001	$ 0.00001
Common stock, shares issued				218,510,509	64,308,498
Common stock, shares outstanding				218,510,509	64,308,498
Stock issuable upon the exercise of options outstanding				34,759	20,700
Class A Common Stock | Service-based Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service based vesting period	4 years	4 years
Common stock granted	96,210	244,445
Class A Common Stock | 2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant				42,797,432
Class A Common Stock | Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant				9,222,883
Issuance of common stock under the employee stock purchase plan				447,955
Class B Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of voting rights entitled to stockholders per share | Vote				10
Common stock, number of shares converted				145,387,306
Common stock, shares authorized				310,000,000	310,000,000		310,000,000
Common stock, par value | $ / shares				$ 0.00001	$ 0.00001
Common stock, shares issued				87,369,554	232,078,452
Common stock, shares outstanding				87,369,554	232,078,452
Stock issuable upon the exercise of options outstanding				27,033,564	36,364,067
Class B Common Stock | 2012 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reclassification or conversion of share				27,033,564

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Reserved Shares of Common Stock for Future Issuance (Details) - shares	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for future issuance	84,255,358	75,486,098
Options and RSU's outstanding
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for future issuance	32,235,043	37,031,861
Shares Available for Future Option and RSU Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for future issuance	42,797,432	31,729,237
Shares Available Subject to the 2019 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved shares of common stock for future issuance	9,222,883	6,725,000

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Fair Value Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility minimum		38.90%	38.40%
Expected volatility maximum		39.50%	39.00%
Expected volatility	38.90%
Risk-free interest rate minimum		1.40%	2.60%
Risk-free interest rate maximum		2.60%	3.00%
Risk-free interest rate	1.70%
Expected term (in years)	6 years 1 month 6 days
Fair value of common stock	$ 41.19
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)		5 years 2 months 12 days	5 years 9 months 18 days
Fair value of common stock		$ 6.16	$ 2.23
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)		6 years 3 months 18 days	6 years 1 month 6 days
Fair value of common stock		$ 38.21	$ 5.63

Stockholders' Equity - Summar_3

Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Options Outstanding
Beginning balance	36,384,767	38,865,057
Options granted	14,600	9,518,730
Options exercised	(8,753,274)	(10,546,987)
Options forfeited or expired	(577,770)	(1,452,033)
Ending balance	27,068,323	36,384,767	38,865,057
Exercisable	16,545,562	22,327,967
Weighted-Average Exercise Price
Beginning balance	$ 2.96	$ 0.83
Options granted	41.19	9.15
Options exercised	1.83	0.75
Options forfeited or expired	4.93	2.54
Ending balance	3.31	2.96	$ 0.83
Exercisable	$ 1.39	$ 2.19
Weighted-Average Remaining Contractual Life (in Years)
Options outstanding	6 years 8 months 12 days	7 years 7 months 6 days	7 years 10 months 24 days
Options exercisable	5 years 10 months 9 days	7 years
Balance	$ 2,575,069	$ 1,266,938
Exercisable—December 31, 2019	$ 1,605,723

Stockholders' Equity - Summar_4

Stockholders' Equity - Summary of Activity for Unvested RSUs (Details) - RSU - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Shares
Unvested and outstanding balance	647,094
Awarded	4,860,097
Vested	(170,892)
Forfeited/canceled	(169,579)
Unvested and outstanding balance	5,166,720
Weighted-Average Fair Value
Unvested and outstanding balance	$ 36.08
Awarded	61.42
Vested	36.41
Forfeited/canceled	48.24
Unvested and outstanding balance	$ 59.50
Aggregate Intrinsic Value
Unvested and outstanding balance	$ 508,612	$ 24,447

Stockholders' Equity - Summar_5

Stockholders' Equity - Summary of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	$ 74,374	$ 19,034	$ 5,244
Capitalized stock-based compensation expense	3,404	201	167
Total stock-based compensation expense	77,778	19,235	5,411
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	1,794	582	287
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	38,008	7,972	1,641
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	20,467	5,538	1,910
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	$ 14,105	$ 4,942	$ 1,406

Interest Income and Other Inc_3

Interest Income and Other Income, Net - Schedule of Interest Income and Other Income, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest And Other Income [Abstract]
Interest income	$ 21,234	$ 4,110	$ 913
Other income (expense), net	751	86	(120)
Interest income and other income, net	$ 21,985	$ 4,196	$ 793

Income Taxes - Components of Lo

Income Taxes - Components of Loss before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Domestic	$ (32,033)	$ (18,330)	$ (11,273)
Foreign	9,811	2,354	1,033
Loss before provision for income taxes	$ (22,222)	$ (15,976)	$ (10,240)

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Taxes Allocated to Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current, State	$ 124	$ 126	$ (127)
Current, Foreign	2,239	967	559
Current, Total	2,363	1,093	432
Deferred, Foreign	(38)	(359)	90
Deferred, Total	(38)	(359)	90
State	124	126	(127)
Foreign	2,201	608	649
Total	$ 2,325	$ 734	$ 522

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Duplicate Income Taxes [Line Items]
Income tax expense	$ 2,325,000	$ 734,000	$ 522,000
U.S. federal statutory income tax rate	21.00%	21.00%	21.00%
Share based compensation deductions	$ 47,032,000	$ 1,630,000	$ (541,000)
Valuation allowance	$ 33,847,000	15,205,000
Net operating loss deductible limitation percentage	80.00%
Net operating losses carryback period	5 years
One-time transition tax payable period on un-repatriated earnings of foreign subsidiaries	8 years
Measurement-period adjustments, tax expense (benefit)			$ 0	$ 4,000,000
Change in valuation allowance of deferred tax assets	$ 18,600,000	5,500,000
Net operating loss carryforwards for federal tax purposes	$ 263,200,000	56,600,000
Federal net operating loss carryforwards expiration year	2031
Percentage of net operating loss carryforwards subjected to taxable income limitation	80.00%
Net operating loss carryforwards for state tax purposes	$ 177,500,000	42,000,000
State net operating loss carryforwards expiration year	2028
Recognized income tax positions measured at largest amount greater than specified percentage being realized	50.00%
Unrecognized tax benefits that would impact effective tax rate	$ 500,000	500,000
Unrecognized tax benefits, income tax penalties and interest expense	$ 400,000	$ 400,000
Significant change in unrecognized tax benefits, nature of event	It is reasonably possible that certain unrecognized tax benefits may increase or decrease within the next 12 months due to tax examination changes, settlement activities, expirations of statute of limitations, or the impact on recognition and measurement considerations related to the results of published tax cases or other similar activities, as such the Company anticipates insignificant changes to unrecognized tax benefits over the next 12 months
Open tax year	2015
Maximum
Duplicate Income Taxes [Line Items]
U.S. federal statutory income tax rate				34.00%
Property recovery correction period	39 years
Minimum
Duplicate Income Taxes [Line Items]
Property recovery correction period	15 years
ASU No. 2019-12
Duplicate Income Taxes [Line Items]
Change In Accounting Principle Accounting Standards Update Early Adoption	true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect	true
Additional Paid-in Capital
Duplicate Income Taxes [Line Items]
Valuation allowance	$ 15,100,000

Income Taxes - Summary of Tax R

Income Taxes - Summary of Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate	$ (4,667)	$ (3,355)	$ (2,151)
Nondeductible expenses	132	380	452
State taxes (net of federal benefit)	98	100	(100)
Net change in valuation allowance	51,892	5,043	1,052
Uncertain tax positions	17	23	241
US tax costs on international operations	1,818	201	296
Foreign taxes	126	92	191
Share based compensation deductions	(47,032)	(1,630)	541
Return to provision	(48)	(120)
Other	(11)
Total	$ 2,325	$ 734	$ 522

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses	$ 66,801	$ 14,631
Stock-based compensation	11,820	2,085
Federal withholding tax reserve		815
Internal use software	2,153	1,746
Lease liability	12,566	10,440
Convertible senior notes - issuance costs	832
Other	2,632	1,297
Total deferred tax assets	96,804	31,014
Less: valuation allowance	(33,847)	(15,205)
Deferred tax assets, net of valuation allowance	62,957	15,809
Deferred tax liabilities:
Commissions	(10,247)	(6,514)
Right of use asset	(11,394)	(9,210)
Convertible senior notes	(40,478)
Other	(800)	(85)
Total deferred tax liabilities	(62,919)	$ (15,809)
Deferred tax assets, net	$ 38

Income Taxes - Summary of Chang

Income Taxes - Summary of Changes in Gross Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Beginning balance	$ 920	$ 920	$ 563
Increases based on tax positions during the current period		0	357
(Decreases) based on tax positions during the current period	(388)
Ending balance	$ 532	$ 920	$ 920

Net (Loss) Income Per Share - S

Net (Loss) Income Per Share - Schedule of Calculation of Basic and Diluted Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic net loss per share:
Net loss	$ (24,547)	$ (16,710)	$ (10,762)
Weighted average shares used in calculating net loss per share, basic			70,951
Basic net loss per share			$ (0.15)
Diluted net loss per share:
Allocation of distributed loss for basic computation			$ (10,762)
Allocation of undistributed loss			$ (10,762)
Weighted average shares used in calculating net loss per share, basic			70,951
Number of shares used in diluted calculation			70,951
Diluted net loss per share			$ (0.15)
Class A Common Stock
Basic net loss per share:
Net loss	$ (13,614)	$ (1,149)
Weighted average shares used in calculating net loss per share, basic	166,582	9,611
Basic net loss per share	$ (0.08)	$ (0.12)
Diluted net loss per share:
Allocation of distributed loss for basic computation	$ (13,614)	$ (1,149)
Reallocation of undistributed loss as a result of conversion of Class B to Class A shares	(10,933)	(15,561)
Allocation of undistributed loss	$ (24,547)	$ (16,710)
Weighted average shares used in calculating net loss per share, basic	166,582	9,611
Conversion of Class B to Class A common shares outstanding	133,768	130,262
Number of shares used in diluted calculation	300,350	139,873
Diluted net loss per share	$ (0.08)	$ (0.12)
Class B Common Stock
Basic net loss per share:
Net loss	$ (10,933)	$ (15,561)
Weighted average shares used in calculating net loss per share, basic	133,768	130,262
Basic net loss per share	$ (0.08)	$ (0.12)
Diluted net loss per share:
Allocation of distributed loss for basic computation	$ (10,933)	$ (15,561)
Allocation of undistributed loss	$ (10,933)	$ (15,561)
Weighted average shares used in calculating net loss per share, basic	133,768	130,262
Number of shares used in diluted calculation	133,768	130,262
Diluted net loss per share	$ (0.08)	$ (0.12)

Net (Loss) Income Per Share -_2

Net (Loss) Income Per Share - Schedule of Potentially Dilutive Securities not Included in Diluted Per Share Calculations (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	33,702	38,625	220,776
Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations			179,815
Shares Subject to Outstanding Stock Options and Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	32,235	37,032	38,865
Unvested Early Exercised Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	718	1,240	2,096
Shares Underlying the Conversion Spread in the Convertible Senior Notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	608
Shares Subject to the 2019 ESPP
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	141	353

Net (Loss) Income Per Share - A

Net (Loss) Income Per Share - Additional Information (Details)	Dec. 31, 2020$ / shares
0.125% Convertible Senior Notes due 2025 | Conversion, On or After March 15, 2025
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt instrument, conversion price per share	$ 92.30

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - Scenario Forecast - Sqreen, Inc. $ in Millions	Feb. 28, 2021USD ($)
Subsequent Event [Line Items]
Purchase consideration in cash and stock to acquire business	$ 260
Purchase consideration in cash and stock to acquire business deferred percentage	25.00%