Revenue and Contract Balances - Disaggregation of Revenue by Type of Customer (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 56,018	$ 24,557	$ 139,163	$ 63,188
% of Revenue	100.00%	100.00%	100.00%	100.00%
Channel partners
Disaggregation of Revenue [Line Items]
Revenue	$ 51,283	$ 23,489	$ 127,521	$ 60,302
% of Revenue	92.00%	96.00%	92.00%	95.00%
Direct customers
Disaggregation of Revenue [Line Items]
Revenue	$ 4,735	$ 1,068	$ 11,642	$ 2,886
% of Revenue	8.00%	4.00%	8.00%	5.00%