Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net loss	$ (144,542)	$ (163,451)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Stock-based compensation	71,104	147,746
Depreciation and amortization	30,550	15,120
Abandonment of long-lived assets	887	554
Noncash lease expense	4,808	3,735
Unrealized foreign currency loss, net	355	691
Deferred income taxes	(638)	(99)
Changes in operating assets and liabilities, net of effect of business combinations
Accounts receivable	24,337	11,113
Deferred contract cost assets	(7,361)	(5,062)
Prepaid expenses and other assets	(4,535)	(5,723)
Accounts payable	5,926	(2,908)
Accrued expenses and other liabilities	(8,909)	14,535
Deferred revenue	15,706	10,845
Operating lease liabilities	(4,359)	(1,929)
Net cash flow (used in) provided by operating activities	(16,671)	25,167
Investing activities
Purchases of property and equipment	(9,433)	(4,194)
Capitalized software development costs	(16,252)	(5,716)
Purchases of strategic investments	(3,018)	(3,450)
Originations of materials financing	(9,259)
Customer repayments of materials financing	6,261
Acquisition of a business, net of cash acquired		(19,982)
Settlement of post-close working capital adjustments from business combinations	1,291
Net cash flow used in investing activities	(30,410)	(33,342)
Financing activities
Proceeds from initial public offering, net of underwriting commissions and discounts		665,129
Proceeds from stock option exercises	14,604	29,126
Payments of deferred offering costs	(270)	(3,527)
Proceeds from employee stock purchase plan	11,513
Payment of deferred business acquisition consideration		(475)
Principal payments under finance lease agreements, net of proceeds from lease incentives	(844)	(742)
Net cash flow provided by financing activities	25,003	689,511
Net (decrease) increase in cash, cash equivalents and restricted cash	(22,078)	681,336
Effect of exchange rate changes on cash	(806)	(731)
Cash, cash equivalents and restricted cash, beginning of period	589,212	383,253
Cash, cash equivalents and restricted cash, end of period	566,328	1,063,858
Reconciliation of cash, cash equivalents and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents	563,224	1,060,512
Restricted cash, current at end of period included in prepaid expenses and other current assets		242
Restricted cash, non-current at end of period included in other assets	3,104	3,104
Cash, cash equivalents and restricted cash, end of period	566,328	1,063,858
Supplemental disclosure of cash flow information
Cash paid for interest other than finance leases	74	110
Cash paid for income taxes	832	214
Cash received for lease incentives	568	1,070
Operating cash flows from finance leases	1,017	1,046
Operating cash flows from operating leases	5,595	3,713
Financing cash flows from finance leases	935	835
Noncash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued expenses at period end	3,024	1,158
Capitalized software development costs included in accounts payable and accrued expenses at period end	1,365	666
Deferred offering costs included in accounts payable and accrued expenses at period end		641
Conversion of redeemable convertible preferred stock into common stock upon initial public offering		728,375
Indemnity holdback consideration associated with a business combination		4,050
Stock-based compensation capitalized for software development	4,061	920
Conversion of available-for-sale debt securities into equity securities	3,550
Right of use assets obtained in exchange for operating lease liabilities	11,237	37
Noncash net change due to operating lease remeasurement	$ (1,671)	$ 9