Earlier quoted context omitted.
I don't see where is that a problem? People who will be using Teams are people using Office 365 daily. Having a cohesive ecosystem makes complete sense. From a UX too.
The problem is that Teams is used by companies who have IT departments that do absolutely insane things like DELETE THE CHAT HISTORY AFTER 24 HOURS because of some sort of perverse, contrived "security" issue. These are the morons that Microsoft is selling to, and giving advice to as on how to configure it. So you wind up with a system that's almost worse than not having anything at all. Our Sharepoint installation w…
Seems much more likely to be due to legal reasons than for security. If the chats are not retained, they can't be found in discovery. (And given chat is even more informal than email, people probably say a lot of things they shouldn't in chat).