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Microsoft 365 Developer Blog
Get the latest updates from Microsoft 365 Developer Blog directly as they happen.
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Latest posts
Last updated 7 days ago
Dev Proxy v1.0 with new features for building robust AI-powered apps
7 days ago
We’re excited to announce Dev Proxy v1.0, with new language model-specific testing...
Build Smarter with the Microsoft 365 Agents Toolkit MCP Server
24 days ago
As AI agents become central to how we build and interact with...
Bring your own agents into Microsoft 365 Copilot
29 days ago
Custom Engine Agents now generally available—build and integrate your own AI into...
Supercharge your EWS migration with AI and GitHub Copilot
about 1 month ago
Are you running apps on Exchange Web Services (EWS)? With EWS support...
Microsoft 365 Copilot APIs: Unlocking enterprise knowledge for AI with the Retrieval API — Now in Public Preview
about 2 months ago
At Build 2025, we introduced the Microsoft 365 Copilot APIs. Developers now...
Dev Proxy v0.29 with refactored architecture, MCP server, and exposed LM prompts
about 2 months ago
We’re excited to introduce Dev Proxy v0.29, with a major architectural overhaul...
Deprecation of MS-APP-ACTS-AS header in Shifts Management Microsoft Graph APIs
about 2 months ago
In app-only access scenarios, Shifts Management Graph APIs previously required the MS-APP-ACTS-AS...
Dev Proxy v0.28 with LLM usage and costs tracking
2 months ago
We’re thrilled to announce the release of Dev Proxy v0.28. This version...
Build like Microsoft: Developer agents in action
2 months ago
Every day, developers tackle complex workflows involving planning, coding, reviewing, testing, securing...
Office Add-ins announces Copilot agents with add-in actions and more at Build 2025
3 months ago
The Office Add-ins team’s mission is to empower developers with new capabilities...
Introducing the Agent Store: Build, publish, and discover agents in Microsoft 365 Copilot
3 months ago
As organizations embrace AI to transform how work gets done, agents are...
Introducing the Microsoft 365 Agents Toolkit
3 months ago
Microsoft 365 Agents Toolkit, an evolution of Microsoft Teams Toolkit, is designed...