Revenue forecasting used to be relatively straightforward. Customers paid a fixed monthly fee, renewal rates were predictable, and next quarter looked a lot like last quarter — just slightly bigger. That’s not how most companies operate anymore. Today, revenue comes from subscriptions, usage-based pricing, enterprise agreements, professional services, and multi-product deals that all behave differently. Forecasting one of those well doesn’t mean you can forecast the others. And getting it wrong (especially at scale) means misallocated headcount, bad infrastructure bets, and guidance you have to walk back.
