I've been searching and searching for ages now, on how to integrate Skype For Business online with an on-premises Exchange 2010. More specifically I want to be able to see free/busy (availability) in Outlook, based on the status of their SFB status. The setup is quite simple: All mailboxes are on the on-premises Exchange 2010 - no hybrid setup nothing is being synched to O365. The Skype For Business is purely online.
I've found plenty of articles stating that it's supported and some who've reported that they've configured it, but absolutely nothing on how to actually do it. Does anyone know how to actually do this? Because MS doesn't seem to know either.