Hi Kumar! You can find documentation for M365 Copilot extensibility here: https://learn.microsoft.com/en-us/microsoft-365-copilot/extensibility/ There are several samples in GitHub that should help you get started here: https://github.com/OfficeDev/Copilot-for-M365-Plugins-Samples?tab=readme-ov-file Our particular favorite is this sample that shows how to integrate Azure AI Search with the M365 Copilot: https://github.com/OfficeDev/Copilot-for-M365-Plugins-Samples/tree/main/samples/msgext-doc-search-csharp