We are running an OnPremise CRM 2013 setup using ADFS2.0 and IFD. We have been asked by a partner where it would be possible for their users to login to the system using their AzureAD accounts, while still maintaining the existing local domain logins.
I've found a number of articles around adding OnPremise user accounts into CRM Online, but not the other way around.
Does anyone have some guidance around how to achieve this?