I've read the "Transition from Windows Server 2012 Essentials to Windows Server 2012 Standard" article and it mentions that "the features that are unique to Windows Server 2012 Essentials (such as the Dashboard, Remote Web Access, and client computer backup), still remain available." The Office 365 integration components aren't mentioned in that list so before we recommend the transition to a client, I want to make sure that if we move them to Standard that they won't lose the Essentials O365 functionality.
Thanks,
Rob