Code Microsoft Office 365 [ 2K 2026 ]

SPFx is for developers extending and integrating with Teams.

| If you want to... | Use... | |-------------------|---------| | Insert custom UI into Word/Excel | Office Add-in (JS) | | Automate Excel without deploying a server | Office Scripts | | Read/write emails, calendars, or Teams messages | Microsoft Graph API | | Build a SharePoint dashboard | SPFx | | Automate a legacy on-premises macro | VBA (but plan to migrate) | code microsoft office 365

Coding for involves building applications that extend or integrate with its core productivity tools like Teams , Excel , Outlook , and Word . Modern development has shifted from legacy desktop-only languages to cloud-first web technologies, primarily JavaScript and TypeScript . Core Development Pillars SPFx is for developers extending and integrating with Teams

For the Excel power user who loves code, is the modern successor to VBA macros. Office Add-ins are essentially web apps running inside

Office Add-ins are essentially web apps running inside a sandboxed iframe within the Office application.