Invoicing on proportion of revenue is _hard_, and often times comes down to having to accuse and audit the customers frequently. It also presents issues with bi

Invoicing on proportion of revenue is _hard_, and often times comes down to having to accuse and audit the customers frequently. It also presents issues with billing period. Are you billing monthly or annually? Does that frequency match up with the customer’s billing cycle? Like it or not, per seat and usage based pricing for SaaS ends up being a great proxy for value provider and scales with customer growth.