Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Latest posts
Dev Proxy v0.25, now available, with automatic shut down and simplified configuration management
Read more about the latest Dev Proxy release featuring significant improvements to configuration management, plugin support, and usability.
Introducing the Adaptive Cards documentation hub and new Adaptive Cards updates
Discover how Adaptive Cards can transform your app with rich, interactive experiences that boost productivity and streamline workflows, in our new Adaptive Cards documentation hub.
Unified manifest support for Word, Excel, and PowerPoint now available for preview
The unified manifest is a key component of the Microsoft 365 ecosystem providing a single model for distributing and managing Teams apps, Outlook add-ins, as well as Copilot agents which work across Microsoft 365 apps.  We've released it for Outlook, and now it is available for Word, PowerPoint, and Excel.
Introducing the Microsoft Graph Export-Import APIs for Exchange in public preview
We are happy to announce the launch of Export-Import APIs in limited Public Preview (Beta), a set of Microsoft Graph APIs that empower applications to discover, export and import contents from Exchange Online mailboxes in full fidelity.
Dev Proxy v0.24 with improved generating OpenAPI specs
Try the latest version of Dev Proxy to simulate APIs and test your applications under real-world conditions
Automate app compliance with ACAT
Learn how you can define the compliance boundary for your Microsoft 365 application on Azure and AWS with the App Compliance Automation Tool (ACAT) for Microsoft 365.
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.