Reports
AI-generated structured vendor updates
Build 2026: Office 365 Agent Mode Launch, Multi-Agent Cross-Document Collaboration
Microsoft launched Office 365 Copilot Agent Mode at Build 2026, rolling out to M365 subscribers in late June. Multiple persistent AI Agents run simultaneously across Word, Excel, Teams, and Outlook, each maintaining independent context, permissions, and memory. Multi-agent canvas with drag-and-drop chaining. Agents join Teams channels as named participants. Underlying hybrid of GPT-5.5-turbo and Phi-4-mini. Custom Agent Store opens Q4 2026.
Build 2026: Windows Agent Framework MIT Open Source, Agent Store 85% Revenue Share
Microsoft open-sourced Windows Agent Framework v1.0 under MIT license at Build 2026, supporting YAML manifest for deployment across local Windows, Windows 365, and Azure Arc. Windows Agent Runtime serves as background service managing agent lifecycle, memory, and permissions with fine-grained rule engine. Windows Agent Store offers 85% developer revenue share. Copilot Workspace exits beta. No Windows 12 this year—OS core transformation is agents, not version numbers.