Revenue and Contract Balances - Disaggregation of Revenue by Type of Customer (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 204,799	$ 93,056	$ 46,474
% of Revenue	100.00%	100.00%	100.00%
Channel partners
Disaggregation of Revenue [Line Items]
Revenue	$ 187,541	$ 88,954	$ 42,881
% of Revenue	92.00%	96.00%	92.00%
Direct customers
Disaggregation of Revenue [Line Items]
Revenue	$ 17,258	$ 4,102	$ 3,593
% of Revenue	8.00%	4.00%	8.00%