Most SaaS stacks are a collection of vertical tools that each own one piece of the business but don’t really share memory or context with each other.

I wrote a post arguing that agent loops are becoming the better model. The thing is, a lot of “agent + cron job” setups today are basically doing what traditional SaaS already does — reacting to one event without much broader context. The loop approach only really starts to pull ahead when memory is persistent and shared across different parts of the business.