Microsoft is working on the creation a corporate service Skype Teams, which will become a competitor to messenger Slack.
Skype Teams will get a lot of functionality, similar Slack.

In particular, people can communicate simultaneously with different interlocutors in several groups, send private messages and share files.

Outside the messenger will also be similar to Slack. Developers plan to facilitate the transition of users from one application to another. The advantage of Skype Teams will integrate Service Office applications and Office 365 cloud storage OneDrive, which is absent in Slack.