Platform is the first decision. Persona and blast radius decide the rest.

An enterprise AI agent is a different kind of software: it holds a goal, keeps state across steps, calls tools to change the world, and stops for a human when it cannot proceed safely. This playbook routes every agent workload across Microsoft's three platforms, maps the four agent types that reach production, lays out the six-layer reference architecture, and shows how human oversight scales with autonomy, all seen through GitHub Copilot.