1Knowledge Continuity
55 / 100A small group of people understands this system. Losing one creates real incident risk.
2–3 people own the critical code paths. The absence of any one of them significantly slows incident response. Knowledge transfer has started but isn't complete.
Run a knowledge-transfer session for the top 5 highest-impact files. Each session should produce a short document: what it does, what can go wrong, and how to debug it.