Office 365

Build productivity solutions​ that harness the power of the Office 365 platform.

Microsoft Graph​

Power your app with REST APIs that connect to data in Office 365, Windows 10, and Enterprise Mobility + Security.

Microsoft identity platform

Use the Microsoft identity platform to integrate secure authentication into your application.


Build world-class applications that harness the full power of Windows.

See what's new at Build 2019

Microsoft 365
Office 365
Microsoft Graph
Microsoft identity platform
Microsoft Graph Security API
Microsoft Teams

Featured tools

Graph Explorer
Try Microsoft Graph API requests and see sample responses.
Visual Studio
Create modern applications for Android, iOS, and Windows, web applications, and cloud services.
Adaptive Cards
Create and share rich, interactive UI content in a consistent way.
Script Lab
Use the Office JavaScript API tool to create Office Add-ins for Excel, Word, or PowerPoint.