Featured API: Microsoft Graph

Call a single endpoint to integrate data from Microsoft's cloud services in your app.

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Microsoft API and reference catalog


Comprehensive API reference for working with Microsoft tools, services, and technologies. Whether you're building apps, developing websites, or working with the cloud, you'll find detailed syntax, code snippets, and best practices.

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Microsoft Graph

Use Microsoft Graph to get access to Users, Groups, Mail, Calendar, Contacts, Tasks, Notes and more types coming from Outlook, OneDrive, Azure Active Directory, Office Graph and more, for both consumer and commercial users.

Windows and Windows Phone

Microsoft Azure


Development Tools and Languages

Server and Enterprise