Observability Design for the AI Era — Reconciling PII Protection With AI Searchability, and Driving Self-Healing

Part 1 laid out four monitoring axes (application / infrastructure / CI / LLM) and the shape each one ends up in. Part 2 picks up where the data actually flows: it's production data, with PII in it. This post is about a multi-layer PII design that hashes at both write and search time with the same function, an integration surface where humans (web dashboard) and AI (MCP) share the same backend,…