Enterprise multi‑agent AI systems generate 10,000 interactions per hour, yet observability tools like OpenTelemetry and Langfuse only log dependencies without enforcing policy. Apple introduces Governance‑Aware Agent Telemetry (GAAT), a reference architecture that links telemetry collection to automated enforcement. The result is a closed‑loop system that stops violations before damage occurs. Practitioners can now embed policy checks directly into agent workflows.