Exchange Online unlocks send-from-alias after years of requests, while Project Perception's multi-agent security defense and two new Purview DLP policies for Copilot grounding signal that AI governance is moving from theory to shipped controls.
Four Critical CVEs land across Azure AD B2C, Copilot Studio, Azure AI Language, and Microsoft Fabric - plus GPT-6 Astra and Claude Fable 5.1 go live in Copilot, and Exchange hybrid shops face a hard version-floor deadline starting this week.
Official Microsoft deployment and setup guides for Intune, Defender, Entra, Copilot, Purview, and Viva, organized by Modern Work practice area, plus what actually changes across Commercial, GCC, GCC High, and DoD.
