• build smarter apps with Excel

    Build powerful applications for Excel

    Extend Excel functionality and access Excel data over the web.

  • Bring your Office 365 solution to market

    Bring your Office 365 solution to market

    Use the GTM Guide for ISVs to help maximize your reach and engage more users.

Extend Excel functionality with Office web add-ins

Access Excel data with Microsoft Graph

Add your own custom functions to Excel in addition to the built-in functions, such as SUM().

Record, edit, and create Office Scripts in Excel for the web to automate tasks.
Symbisa transforms supply chain analytics by connecting real world data with Excel.

What's new in Excel development

  • Enhanced programs to promote the privacy and security of your apps

    The goal of the Microsoft 365 Certification program is to offer assurance and confidence to enterprise organizations that data and privacy a...

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  • Power up with Office Add-ins @ Build 2020

    We’re excited to announce new capabilities that let you create your own custom experiences in Microsoft 365, and enable your users to achiev...

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  • Microsoft Office Add-ins community call-April 2020

    This month's agenda, hosted by David Chesnut, included topics on AppSource Add-in validation and Partner Center experience​; updates to the ...

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  • Office Add-ins community call – March 11, 2020

    March’s Office Add-ins community call, covers new features for task pane, enabling or disabling ribbon buttons. Item send event for Outlook ...

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Excel developer training and events

  • Office Add-ins developer community call - month

    Community call

    June 10, 2020

    The Office Add-ins community call is our monthly event for developers to connect in real-time with the folks who are building the Office Jav...

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  • Build UWP apps with Microsoft Graph

    Work with the Microsoft Graph SDK to access data in Office 365 by building native Universal Windows Platform (UWP) applications.

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  • Build MVC apps with Microsoft Graph

    Work with the Microsoft Graph .NET SDK in creating an ASP.NET MVC web application to access data in Office 365.

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  • Build Ruby on Rails apps with Microsoft Graph

    Use Microsoft Graph to access data in Office 365 by building Ruby on Rails web applications.

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Get resources

Documentation

Training

Excel partner solutions

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Lucid Software

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Frontline Systems

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Sage Intelligence