15 Billings (1 - 3) US$M Revenue (1 - 3) US$M 1. Business customer subscription terms typically range from 1 3 years 2. Individual customer subscription terms typically range from 1 month - 1 year 3. Substantial majority of business customers billed annually in advance $167 $232 $317 $359 2017 2018 2019 TTM 39% Total YoY Growth (%): 37% 31% Billings and Revenue Growth 2017 2018 2019 TTM Individuals Business Customers 79% 88% $206 $294 $379 43% 29% Total YoY Growth (%): B2B Billings YoY Growth (%): 52% 33% $400 21% 24 %