When Ownership Boundaries Break: How Composable Systems Fail When Delivery Models Don't Match Reality

https://wiki-net.win/index.php/Modularity_Decisions:_Native_Cloud_Services_vs_Independent_Vendors_-_A_Practical_30-Day_Playbook

Why ownership boundaries matter more than your architecture diagram Everyone loves a clean diagram: services, APIs, modules drawn as neat boxes with arrows. The problem is that diagrams do not decide who fixes things at 2 a.m. People do