Microsoft Teams - Wikipedia
https://en.wikipedia.org/wiki/Microsoft_TeamsMicrosoft announced Teams at an event in New York, and launched the service worldwide on March 14, 2017. It was created during an internal hackathon at the company headquarters, and is currently led by Microsoft corporate vice president Brian MacDonald. Microsoft Teams is a web-based desktop app, developed on top of the Electron framework from GitHub which combines the Chromium rendering engine and the Node.js JavaScript platform.