Totally different. That is a web-based chat app. MS is selling a large monitor which has chat, whiteboarding, etc, which doesn't depend on a third-party server to run. If that company goes under a year from now, you have to find another app, retrain everyone to use it, etc. Plus, it doesn't have any hardware, so you still need to set up cameras, microphones, fuss with them if things don't work right, etc. That's what MS is selling, something that's plug and play.