In an attempt to remove the confusion whether Visual Studio Online is an IDE in the Cloud, Microsoft has decided to rename Visual Studio Online to:
Visual Studio Team Services
Which nicely abbreviates to VSTS, an acronym people who were using TFS in the 2005 and 2008 era may remember :). In remembrance of that great heritage:
Note to self: Here we go again, renaming all tags on the blog and trying to get the StackOverflow tag renamed *again*.