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

https://www.toro-bookmarks.win/how-i-stopped-duplicating-business-logic-while-launching-into-three-markets-at-once

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