Developers are told "to focus on the product" and let SaaS vendors handle the rest, but integrating third-party services, whether it's auth, queuing, file storage, or image optimization, comes at a cost. Not just in dollars but in time, friction, and mental overhead. There are five hidden taxes you pay every time you integrate a SaaS into your stack. 1. The Discovery Tax Before you can integrate anything, you first have to figure out what they're actually selling? What problems are they solving?...