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Use the Office JavaScript API to extend functionality for Word, Excel, PowerPoint, and Outlook.

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What's new in Office development

Top 5 AppSource validation errors for Office Add-ins submissions – September 2023 

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Tabs Azure AD SSO Sample - C#

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ChatLifecycle Application

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Channel life cycle using Node js

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Featured tools

Script Lab

Script lab is an Office JavaScript API tool for anyone who wants to learn about writing Office add-ins for Word, Excel, PowerPoint, or Outlook.
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Office Scripts

Use Office Scripts in Excel on the web to automate your common tasks. Learn how to create and edit Office Scripts and get started automating today.
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Fluent UI

The official front-end framework for building experiences that fit seamlessly into Microsoft 365.
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Developer Tools

Use our developer tools to build solutions for consumer and professional markets.
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Office developer community


Questions

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Office assisted support

Premier/Unified Support customers get enterprise-level support for Office development.

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