Microsoft Agent 365 Review — The Enterprise Control Plane for AI Agents

Microsoft Agent 365 launched May 1, 2026 as part of the new M365 E7 'Frontier Suite' ($99/user/month). It's a unified control plane for observing, governing, and securing AI agents at enterprise scale — covering both Microsoft-native agents and third-party ones. Here's what it is, what it does, and whether the E7 bundle is worth the upgrade.