Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Featured posts
From Innovation to Enterprise Trust with Microsoft Agent 365
Agent 365 serves as the control plane for agents, providing organizations with a centralized location to manage agent identity, policies, observability, and lif...
Latest posts
General Availability of SharePoint Framework 1.22 – A Major Refresh of the Build & Tooling Experience
We are excited to announce general availability for the SharePoint Framework 1.22. This time focus is primarily on updating the build toolchain and to address npm audit issues.
Dev Proxy v2.0 with improved AI telemetry, and small breaking changes
Introducing Dev Proxy v2.0 with improved AI telemetry, and small breaking changes.
Introducing TypeSpec for Microsoft 365 Copilot – Build declarative agents faster with more confidence
We’re excited to announce that TypeSpec for Microsoft 365 Copilot is now generally available! This milestone marks the first stable release of the domain-specific language (DSL) designed to streamline how developers build and extend Microsoft 365 Copilot. Whether you’re creating an agent to help colleagues find documents, or connecting your service as an API plugin, TypeSpec for Microsoft 365 Copilot makes the process simpler, safer, and more productive. A developer-centric experience – strong typing, IntelliSense and productivity One of the biggest pain points for developers building Copilot extensibility so...
SharePoint Framework (SPFx) roadmap update – November 2025
SPFx is powering the future of Microsoft 365. From AI-driven portals to seamless integrations across SharePoint, Teams and Viva, SPFx is driving innovation at scale. This monthly blog series kicks off our journey into the next evolution - transparent, community-driven, and built for the AI era. Let’s shape what’s next, together.
SharePoint Site Creation in Microsoft Graph
The SharePoint team is excited to (finally) bring Site Collection creation to Graph! Starting in Microsoft Graph beta you can now create new site collections!
Ignite 2025: A Developer’s Guide to Building Agents for Microsoft 365
Ignite 2025 brought many innovations for developers building agents for Microsoft 365. From new capabilities in Declarative Agents and Custom Engine Agents to the introduction of Microsoft Agent 365, the platform now enables organizations to architect intelligent solutions that are secure, governable, and ready for enterprise scale. Whether you’re creating your first agent, adapting existing frameworks, or navigating a crowded AI landscape, Microsoft 365 empowers you to build agents that integrate deeply with enterprise systems, leverage the latest AI stacks, and meet the highest standards for security and gov...
Microsoft 365 Copilot APIs: What’s New and What’s Next
At Build 2025, we introduced the Microsoft 365 Copilot APIs to help developers bring grounded AI into their solutions without rebuilding indexes or compromising security. The response has been encouraging, and your feedback continues to guide the direction of the platform. Customers are asking for deeper retrieval, better search, and simpler ways to generate answers that honor permissions and context. This Ignite 2025 roadmap update expands the Copilot API surface with new capabilities that make grounded AI more accessible, more reliable, and easier to integrate within the Microsoft 365 trust boundary. Ret...
Ignite 2025 – What’s new for Office Add-ins
Read about new and exciting features now available in the Office Add-ins ecosystem for Ignite 2025. Learn about platform updates, developer experience improvements, and store enhancements.
Microsoft Agent 365 Interoperability for Smart, Secure Productivity
Agent 365 Interoperability equips any agent with apps and data to simplify human-agent workflows.