Microsoft has announced the new project called Microsoft Teams, a group chat workspace within Office 365. It runs on Windows, Mac, Android, and iOS.
An overview of the Microsoft Teams developer platform can be found here. More information can be found at teams.microsoft.com and the Microsoft Teams Blog.
Office 365 IT administrators can turn on Microsoft Teams by opening Office 365 Admin Center and selecting Settings > Services & Add Ins > Microsoft Teams.
The latest release of SQL Server Management Studio (SSMS) is available as a free download from https://msdn.microsoft.com/en-US/library/mt238290.aspx. A SQL Server license is not required.
This version (16.5) is recommended for use with currently supported SQL Server versions 2008 through 2016, as well as cloud features in Azure SQL databases.