With Microsoft Teams on your PC, Mac, or mobile device, you can: Pull together a team. Use chat instead of email. Securely edit files at the same time. See likes, @mentions, and replies with just a single tap. Customize it by adding notes, web sites, and apps. Learn more at Microsoft's site. Copied from: https://support.microsoft.com/en-us/office/video-what-is-microsoft-teams-422bf3aa-9ae8-46f1-83a2-e65720e1a34d