Microsoft Teams is a workplace chat and meeting app made by Microsoft. It launched in 2017 as part of Office 365 and replaced Skype for Business. Microsoft retired the consumer Skype service in 2025 and moved its users to the free version of Teams.
Teams combines group chat, channels for projects, video meetings, calls and file sharing in one place. Files are stored in SharePoint and OneDrive, and people can edit Word, Excel and PowerPoint documents inside the app. Meetings support screen sharing, recording, live captions and breakout rooms. Schools use Teams for online classes and assignments. Companies can add apps from other vendors and connect Teams to phone systems.
There is a free version for personal use with limits on meeting length and storage. Businesses usually get Teams through a paid Microsoft 365 plan. In Europe, Microsoft now also sells Microsoft 365 plans without Teams after competition complaints. Teams runs on Windows, Mac, iOS, Android and in the browser. It is one of the most used work chat apps in large companies and public sector bodies in the US, the UK and Europe.