Harness the full power of JavaScript to empower your users to super charge their reporting and analysis in Excel. Learn about new capabilities like Contextual Tabs and WebView2 for modern experiences, and how you can create compelling experiences with less development time with the InsertWorksheetsFromBase64 API. Microsoft 365 Dev Center -- https://developer.microsoft.com/en-us/microsoft-365/?utm_source=developermscom Explore Deeper Content and Training -- https://aka.ms/LearnatBuild2021 Microsoft Build 2021