Microsoft acquired Xamarin on Feb 24, 2016 https://en.wikipedia.org/wiki/Xamarin https://en.wikipedia.org/wiki/Xamarin Microsoft announced Teams March 17, 2017

Microsoft acquired Xamarin on Feb 24, 2016 https://en.wikipedia.org/wiki/Xamarin https://en.wikipedia.org/wiki/Xamarin Microsoft announced Teams March 17, 2017, with a launch date of the end of 2018 https://news.microsoft.com/announcement/teams-platform-introduced/?return=https%3A%2F%2Fnews.microsoft.com%2Fabout%2F https://news.microsoft.com/announcement/teams-platform-intro... Make of that what you will.