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...

Read how the Retrieval API gives developers a secure, compliant and scalable way to integrate enterprise content into their AI workflows.

Learn how Microsoft 365 Copilot APIs allow you to build solutions grounded in your organization’s content, context, and permissions, without needing to relocate or duplicate data.

We are excited to announce that developers using the Teams JS SDK v2 can now also extend and preview Teams personal tabs in Office.com (Target Release) & Office App for Windows (Target Release).

We are excited to announce that starting today, developers using the new Teams JS SDK can now extend and preview Teams personal tabs and search-based message extensions in Outlook Web (Target Release).

We are excited to share Microsoft Teams JS SDK v2 is now in public preview, which unlocks the ability for developers to begin extending Microsoft Teams apps across Microsoft 365. Now, apps built for Teams not only run everywhere Teams runs, but also in more of the places users spend their time.