If you build agents with the Copilot Studio extension for Visual Studio Code, you already know the fastest way to iterate is to treat your agent like software: version it, review changes, and promote it through environments with confidence. Today, the Microsoft Copilot Studio extension for Visual Studio Code is generally available, so you can build...

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’...

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 w...

Custom Engine Agents now generally available—build and integrate your own AI into the flow of work Microsoft 365 Copilot is redefining how people interact with AI—embedding it directly into the flow of work as the intuitive, natural interface for agents: the ‘UI for AI’ As Copilot becomes the interface for AI in the workplace, we’re seeing grow...

Discover how developers can now build enterprise-grade, scalable, multi-channel agents with code using the Microsoft 365 Agents SDK.

Dive into our key announcements from Build to discover new pathways to extend, customize, and amplify Copilot capabilities.

Get familiar with the latest features that can help you boost your app's visibility and engagement across Microsoft 365.

Create engaging and productive experiences for Outlook and Teams users leveraging the same code base and capabilities across both applications.

In this post, we answer the most common questions about using message extensions in Teams.