Stockholders' Equity - Summary of Stock Based Compensation Cost from Stock Options, RSUs and ESPP (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total amount charged to expense	$ 49,684	$ 10,689	$ 87,571	$ 20,583
Property and equipment (capitalized internal-use software)	1,017		1,957
Total stock-based compensation cost	50,701	10,689	89,528	20,583
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total amount charged to expense	1,285	642	2,412	1,243
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total amount charged to expense	14,280	3,246	24,840	6,315
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total amount charged to expense	11,039	1,871	19,153	3,375
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total amount charged to expense	$ 23,080	$ 4,930	$ 41,166	$ 9,650