Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
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Frontier Tuning: Teaching AI to work the way you do
We're announcing the private preview of Frontier Tuning, a new approach to making AI work the way your business does by applying reinforcement learning inside y...
Latest posts
Migrating EWS notifications to Microsoft Graph
Migrating from the Exchange Web Services (EWS) notification framework, which supports push, pull, and streaming notification types — to the Microsoft Graph subscription model represents a fundamental transition toward a unified, stateless, and event-driven framework.
Agents League Hackathon 2026 – Enterprise Agents
From declarative agents for Microsoft 365 Copilot to fully autonomous multi-agent systems orchestrating complex workflows, developers now have the power to redefine how work gets done. If you're ready to push those boundaries, Agents League Hackathon 2026 is your stage. What is Agents League? Agents League is not just another hackathon—it's a global playground for developers, makers, and architects to experiment with: Whether you're building with pro-code tools (C#, TypeScript, SDKs) or leveraging low-code platforms like Copilot Studio, this is where innovation meets real-world im...
Work IQ: Production‑ready intelligence for every agent
Work IQ provides a workplace intelligence layer that enables agents to access and reason over organizational data, context, and tools, continuously building a semantic understanding across Microsoft 365 and external systems with built-in, permission-aware governance.Â
Build collaborative agents where work happens
At Microsoft Build 2026, we're announcing new investments to help your agents become teammates in everyday work, from new interaction patterns to streamlined tooling.Â
Frontier Tuning: Teaching AI to work the way you do
We're announcing the private preview of Frontier Tuning, a new approach to making AI work the way your business does by applying reinforcement learning inside your compliance boundary with your own data, processes, and conventions.Â
SharePoint Framework (SPFx) roadmap update – May 2026
SPFx is powering the future of Microsoft 365 with AI driven portals and deep integrations across SharePoint and Microsoft 365. The May 2026 update shares new features and the roadmap for the next evolution built for the AI era. This is a transparent community driven journey that we shape together based on your input.
General Availability of SharePoint Framework 1.23 – Advancing the modern developer experience
We are excited to announce general availability for the SharePoint Framework 1.23. We are rolling out new features in extensions, preview of new CLI and addressing known npm audit issues.
Announcing the public preview of the Microsoft 365 Copilot Agent Evaluations tool
The Microsoft 365 Copilot Agent Evaluations tool helps developers measure and improve the quality of agents they build for Microsoft 365 Copilot.
Announcing general availability of the mailbox import and export Microsoft Graph APIs
The mailbox import and export APIs on Microsoft Graph are now generally available.