https://techcrunch.com/2022/01/03/3-views-pay-attention-to-these-startup-theses-in-2022/

In retrospect, the rise of software as a service (SaaS) is obvious. But for years, the idea that software would not only be hosted by providers instead of purchased by customers, and rented, instead of owned outright, was far from anyone’s mind.

SaaS has cemented its place in the epicenter of startup and Big Tech life, but it’s already being disrupted by the usage-based pricing movement. More startups are offering their services via a developer hook or API, and charging for customer usage over, say, a set number of seats for a predetermined period of time.