Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Featured posts
SharePoint Framework (SPFx) roadmap update – September 2026
New Copilot UX components heading to Generally Available in October 2026, SPFx 1.24 Beta 5 is now available, React 18 support is coming in 1.24. Updates coming ...
Latest posts
Teams Toolkit for Visual Studio Code update – January 2025
We’re kicking off the new year with exciting updates to Teams Toolkit for Visual Studio Code including a refreshed user interface for getting started and more!
Announcing the Office Add-ins Development Kit GA
The Office Add-ins Development Kit for Visual Studio Code is now generally available! After months of public preview, we've gathered invaluable feedback from the community and improved the experience.
Preview the GitHub Copilot extension for Teams Toolkit
Introducing the GitHub Copilot for Teams Toolkit—your companion in Visual Studio Code, Visual Studio, and GitHub.
Compute scaling in Azure Fluid Relay
Explore the journey of identifying and fine-tuning the optimal Kubernetes autoscaling configuration for Azure Fluid Relay.
Boost your Microsoft 365 app performance: Introducing tree shaking in TeamsJS
With Microsoft Teams JavaScript client library (TeamsJS) version 2.31.0, we’re excited to make the TeamsJS library fully tree-shakable.
Latest enhancements in Fluid Framework 2
Catch up on all of the Fluid Framework 2 announcements highlighted at Ignite including the AI Collab library, Fluid presence library, and more.
Update on nested app authentication and deprecation of Exchange Online legacy tokens
Earlier this year, the Office Platform Team announced that Exchange Online legacy tokens are deprecated and will be turned off. This is part of Microsoft’s Secure Future Initiative (SFI) to give organizations the tools they need in the current threat landscape. We’ll begin turning off legacy tokens in February 2025. Publishers and developers are actively migrating their Outlook add-ins to use Entra ID tokens through nested app authentication (NAA) and Microsoft Graph instead of legacy tokens.
Accessibility improvements in Microsoft 365 PDF export
Developers can leverage the accessibility improvements in PDF export in Word, Excel, and PowerPoint to build more inclusive solutions.
Dev Proxy v0.23 with inspecting cloud API requests
We’re excited to share a new version of Dev Proxy to help you build robust apps connected to APIs.