
M365 Roundup, September 2025: Security Suites Come to Business Premium
New Defender and Purview add-on SKUs for Business Premium, Anthropic models in Copilot, an auto-installing Copilot app, and a browser policy that needs action now.
Microsoft product

New Defender and Purview add-on SKUs for Business Premium, Anthropic models in Copilot, an auto-installing Copilot app, and a browser policy that needs action now.

AI readiness is the rare conversation the C-suite starts. Here is the engagement model, the four-level ladder, and a real fintech story MSPs can copy.

GPT-5 rolls into Copilot Chat, Intune adds two-admin approval for destructive actions, Autopilot patches during setup, and Windows 10 ESU hits the CSP price list.

Token protection reaches Entra ID P1, Defender gains mail-bombing detection, the Conditional Access Optimization Agent hits GA, and Intune ships LAPS for macOS.

Las Vegas MSP Agilitec cut Level 1 support with AI, put leadership back in front of clients, and operates like a general contractor of vetted experts. Inside the model.

Microsoft blocks legacy browser auth and requires admin consent by default, Safe Attachments loses Monitor mode, passkey profiles go per-group, and Teams channels learn to thread.

Microsoft kills the nonprofit Business Premium and E1 grants, raises the bar for CSP indirect resellers, and ships Copilot Tuning. May 2025's M365 changes, sorted by who has to act.

Teams Premium flags sensitive content during screen sharing, Purview meters GenAI data security as pay-as-you-go, and Copilot lands across PowerPoint, Forms, and calls.

Exchange Online enforces tenant-wide outbound email limits, E5 Security arrives as a Business Premium add-on, and the Report Message add-in enters maintenance mode.

Microsoft-managed Conditional Access policies start auto-enforcing after 45 days, Skype interop in Teams dies May 1, and Hotpatch hits preview. The February 2025 changes, sorted by deadline.

A hands-on video walkthrough of building two working AI agents in Microsoft Copilot Studio: a loan analyzer that decides and emails applicants, and a Teams-based app access evaluator for IT.

Satya Nadella says AI agents could displace traditional SaaS. We built a working loan-approval agent in Copilot Studio in about an hour to test the claim. Here is what holds up and what is still hype.