Microsoft Build 2026 had many AI announcements, but the one I found most meaningful was not another model or another Copilot UI.
It was Agent Harness in Microsoft Agent Framework.
My reading is simple: Microsoft is trying to move agent development from "the agent can run" to "the agent can survive production."
That difference matters.
Most agent demos look impressive because the happy path is short. A user asks, the model reasons, a tool is called, and the result comes back. But real agent workloads are messier:
