The following table sets forth our statements of operations data expressed as a percentage of total revenue for the periods presented: Three Months Ended March 31, 2022 2021 Revenue: Platform 97.0 % 96.7 % Professional services and other 3.0 3.3 Total revenue 100.0 100.0 Cost of revenue: Platform 25.8 15.5 Professional services and other 4.2 3.4 Total cost of revenue 29.9 19.0 Gross Profit 70.1 81.0 Operating expenses: Research and development 39.4 40.0 General and administrative 42.0 51.1 Sales and marketing 18.9 10.6 Total operating expenses 100.2 101.7 Loss from operations (30.2) (20.7) Other income (expenses), net: Other income (expense), net 0.1 0.0 Change in fair value of warrant liability 0.0 (52.4) Total other income (expenses), net 0.1 (52.5) Loss before income taxes (30.0) (73.1) (Benefit) provision for income taxes (3.1) 0.1 Net loss and comprehensive loss (26.9) (73.2) Accretion of redeemable convertible preferred stock to redemption value 0.0 0.0 Net loss attributable to Class A and Class B common stockholders (26.9) % (73.3) % 30