Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Consolidated net loss	$ (503,480)	$ (257,691)	$ (71,114)
Adjustments to reconcile net loss including noncontrolling interests to net cash provided by operations:
Depreciation and amortization	75,622	43,808	27,664
Stock-based compensation expense	341,942	79,158	17,634
Change in fair value of warrants	0	1,890	1,190
Operating lease non-cash expense	43,794	0	0
Other non-cash charges/(credits)	680	1,139	(693)
Amortization of debt issuance costs	216	0	0
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable	(61,044)	(156,865)	(40,092)
Accounts payable	23,369	4,488	(113)
Prepaid expenses and other current assets	(13,593)	(4,826)	(10,268)
Other assets	(1,367)	1,373	339
Developer exchange liability	82,994	49,905	12,897
Accrued expenses and other current liabilities	58,809	30,906	10,719
Other long-term liability	(1,189)	(4,460)	11,415
Operating lease liabilities	(34,743)	0	0
Deferred revenue	819,927	965,919	187,916
Deferred cost of revenue	(172,828)	(230,404)	(48,309)
Net cash provided by operating activities	659,109	524,340	99,185
Cash flows from investing activities:
Acquisition of property and equipment	(93,273)	(104,153)	(83,264)
Payments related to business combination, net of cash acquired	(45,692)	(40,919)	0
Purchases of short-term investments	0	(5,991)	(89,601)
Maturities of short-term investments	0	63,000	90,000
Purchases of intangible assets	(7,856)	(8,967)	(1,465)
Net cash used in investing activities	(146,821)	(97,030)	(84,330)
Cash flows from financing activities:
Proceeds from issuance of preferred stock for warrant exercises	0	147	0
Proceeds from issuance of common stock	76,177	15,156	3,112
Net proceeds from issuance of preferred stock	534,286	149,669	0
Capital contribution from noncontrolling interest holder	0	0	50,000
Proceeds from 2030 Notes	990,000	0	0
Payment of debt issuance cost	(2,339)	0	0
Net cash provided by financing activities	1,598,124	164,972	53,112
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(55)	168	12
Net increase in cash, cash equivalents and restricted cash	2,110,357	592,450	67,979
Cash, cash equivalents, and restricted cash
Beginning balance	893,943	301,493	233,514
Ending balance	3,004,300	893,943	301,493
Supplemental disclosure of cash flow information:
Cash paid for interest	0	0	0
Cash paid for income taxes	0	0	0
Supplemental disclosure of noncash investing and financing activities:
Property and equipment additions in accounts payable and accrued expenses	50,388	13,990	12,169
Fair value of common stock and unregistered restricted units issued as consideration for business combination	31,274	40,696	0
Fair value of common stock issued in exchange for intangible asset purchase	0	2,854	0
Conversion of convertible preferred stock to common stock upon direct listing	879,113	0	0
Unpaid debt issuance costs	$ 154	$ 0	$ 0