We're in the middle of migration to Office 365, so have two groups of users
Yet to be migrated are on Exchange 2010, migrated are on EOL
Staff on EOL are being moved to Skype Server 2015, pending move to Skype For Business Online. Non-migrated staff are being kept on Lync Server 2010
We want conditional access to Skype Server 2015, just for the staff already migrated to EOL. In this scenario, can Skype Server 2015 be put into Modern Auth mode so login requests are passed to ADFS BUT we leave Exchange 2010 unchanged?
