When I create a new team in Microsoft Teams, what is created for me in the background?

When I create a new team in Microsoft Teams, what is created for me in the background?

https://www.youtube.com/watch?v=nKU-FMzZFF0
https://blogs.office.com/2016/11/02/take-an-in-depth-look-at-microsoft-teams-now-in-preview/
https://blogs.office.com/2016/11/02/introducing-microsoft-teams-the-chat-based-workspace-in-office-365/
https://blogs.office.com/2016/10/31/whats-new-in-office-365-administration-october-update/
http://blogs.microsoft.com/blog/2016/10/31/microsoft-powerapps-flow-generally-available-starting-tomorrow/#sm.000019o851gocdd09sipidb9lzldk
Microsoft Flow
Microsoft PowerApps
https://blogs.office.com/2016/10/31/introducing-our-new-scheduling-experience-for-outlook-for-ios/


Office 365 has grown considerably since this tie last year, with commercial revenue growth up by 51% and active users by 40.
The total of Office 365 consumer subscribers is now 24 million, while the commercial market has 85 million. In total, commercial revenue growth is up by 51%, and active users are up by 40%.
Office 365 Now Has 85 Million Commercial Subscribers and 24 Million Consumer Users
https://www.youtube.com/watch?v=UFWar2NyqJQ&feature=share
http://thecloudmouth.com/2016/10/27/using-emojis-in-your-yammer-profile/