Equity Incentive Plans - Summary of Stock-based Compensation Expense Recognized in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 204,039	$ 141,194	$ 93,680
Capitalized stock-based compensation expense	0	188	10
Total stock-based compensation expense	204,039	141,382	93,690
Subscription
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	8,308	8,368	7,105
Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	9,435	6,463	4,824
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	80,170	59,911	35,267
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	68,943	45,798	31,581
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 37,183	$ 20,654	$ 14,903