Microsoft Graph
Integrate Office 365 REST APIs powered by Microsoft Graph into your own app to connect to files, calendars, mail and more.
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Office Add-ins
Extend the functionality of Office with a web app that lives within Office applications.
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SharePoint Add-ins
Extend the functionality of SharePoint with a web app that lives within a SharePoint website.
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Office 365 Connectors
Connect your apps to the conversations of Office 365 users and engage them with actionable content and updates from your service.
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Can't find what you're looking for? Check out this full list of all development options for Office