These add-ins are still supported in the classic Outlook on Windows desktop client. Office Add-ins provide the following advantages over add-ins built using VBA, COM, or VSTO.Ĭross-platform support: Office Add-ins run in Office on the web, Windows, Mac, and iPad.Ĭentralized deployment and distribution: Admins can deploy Office Add-ins centrally across an organization.Įasy access via AppSource: You can make your solution available to a broad audience by submitting it to AppSource.īased on standard web technology: You can use any library you like to build Office Add-ins.ĬOM and VSTO add-ins aren't supported in the new Outlook on Windows that's currently in preview.

When needed, it loads the add-in's JavaScript and HTML code, which runs in the context of a browser or webview control in a sandbox. Unlike COM and VSTO add-ins, Office Add-ins are web add-ins: the application (for example, Excel), reads the add-in manifest and connects the add-in's custom ribbon buttons and menu commands in the UI. How are Office Add-ins different from COM and VSTO add-ins?ĬOM and VSTO add-ins are earlier Office integration solutions that run only in Office on Windows. For example, use Microsoft Graph API to connect to data that drives productivity.Ĭreate new rich, interactive objects that can be embedded in Office documents - Embed maps, charts, and interactive visualizations that users can add to their own Excel spreadsheets and PowerPoint presentations. Use the Office Add-ins platform to:Īdd new functionality to Office clients - Bring external data into Office, automate Office documents, expose functionality from Microsoft and others in Office clients, and more. Office Add-ins can do almost anything a webpage can do inside a browser. Your solution can run in Office across multiple platforms, including Windows, Mac, iPad, and in a browser. With Office Add-ins, you can use familiar web technologies such as HTML, CSS, and JavaScript to extend and interact with Outlook, Excel, Word, PowerPoint, OneNote, and Project. You can use the Office Add-ins platform to build solutions that extend Office applications and interact with content in Office documents.

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