Microsoft 365 Developer Blog

A developer platform for building collaborative apps for hybrid work

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From Innovation to Enterprise Trust with Microsoft Agent 365
Nov 18, 2025
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From Innovation to Enterprise Trust with Microsoft Agent 365

Nirav Shah
Nirav Shah

Agent 365 serves as the control plane for agents, providing organizations with a centralized location to manage agent identity, policies, observability, and lif...

Microsoft 365 DeveloperMicrosoft 365 Copilot

Latest posts

Microsoft Teams Developer Platform Enhancements Announced for Build 2018
May 7, 2018
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Microsoft Teams Developer Platform Enhancements Announced for Build 2018

Microsoft Teams team
Microsoft Teams team

We are excited to join the Office 365 team at Build 2018 to talk about what's new in the Microsoft Teams developer platform.

Conversations become actions in Outlook
May 7, 2018
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Conversations become actions in Outlook

Laura Graham
Laura Graham

At Build 2018, we’ve announced several technologies to help developers enrich emails with new interactive capabilities.  These capabilities allow developers to engage with their users more deeply, right in context within the email, thereby reducing the friction between intent and action.

Your guide to Office 365 at Build 2018
May 7, 2018
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Your guide to Office 365 at Build 2018

Office Add-ins team
Office Add-ins team

We’re blogging the latest, greatest news from Build 2018 for the Office 365 developer community. 

SharePoint Development Community (PnP) – May 2018 update
May 7, 2018
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SharePoint Development Community (PnP) – May 2018 update

Vesa Juvonen
Vesa Juvonen

SharePoint Dev Ecosystem / SharePoint Patterns and Practices (PnP) May 2018 update is out with a summary of the latest guidance, samples, and solutions from SharePoint engineering or from the community for the community.

Azure Machine Learning, JavaScript Custom Functions, and Power BI Custom Visuals Further Expand Developers Capabilities with Excel
May 7, 2018
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Azure Machine Learning, JavaScript Custom Functions, and Power BI Custom Visuals Further Expand Developers Capabilities with Excel

Office Add-ins team
Office Add-ins team

Today at Build, we announced a powerful set of capabilities to the Excel platform, offering developers, data scientists, and power users more opportunities to better work with data. Developers and data scientists can now to execute custom functions locally in JavaScript or with Microsoft Azure Machine Learning services to create their own powerful additions to Excel's catalog of formulas. 

NPM package for Visio JavaScript APIs
May 7, 2018
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NPM package for Visio JavaScript APIs

Visio team
Visio team

Visio JavaScript APIs extend the capabilities of Visio Online by enabling developers to build rich mashup solutions to meet their organization’s specific needs. The solution needs to reference the Visio JavaScript library from the CDN location. This blog discusses how to install NPM and acquire IntelliSense definitions.

Replying to a Kaizala message or action
May 3, 2018
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Replying to a Kaizala message or action

Kaizala Developer Platform team
Kaizala Developer Platform team

In this post, I will introduce the replyToReferenceId property that enables you to reply to a message or action (attachment, custom card, image, etc.) on Kaizala group. This is required when you want to have a threaded conversation using API [or] bot scenario where you want to reply to a specific user query.

New SharePoint CSOM version released for SharePoint Online – April 2018
Apr 27, 2018
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New SharePoint CSOM version released for SharePoint Online – April 2018

SharePoint team
SharePoint team

We are happy to announce the availability of new SharePoint Client-Side Object Model (CSOM) version targeted for the Office 365 or more specifically for SharePoint and Project Online.

New Office Add-ins Analytics Report in Universal Store Dev Center and Seller Dashboard
Apr 27, 2018
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New Office Add-ins Analytics Report in Universal Store Dev Center and Seller Dashboard

Office Add-ins team
Office Add-ins team

Today we are excited to announce the availability of enhanced Office Add-in analytics within the Universal Store Dev Center. The new Usage report shows how customers are using your add-in across Windows (2016), Mac (2016), iOS, and Web apps.