SAAAAS stands for Software And Advice As A Service. You haven’t heard of it before because I’ve just made it up. You might think you have, because there is already an acronym — SAAS — that stands for Software as a Service. This is the business model where you write a piece of software that solves a problem, turn it into a platform, and charge people a subscription to use it. Xero, which I use to manage my bookkeeping, is a good example.