O-auth- open ID -token
WS federation
Hi HosnyA,
I am not sure if I have tried any of the following authentication but most authentication integration on can be done via REST and SOAP. Found this existing forum that is related to oauth 2.0 which may find useful, see here HERE
More info on authentication methods here HERE
Chapter 9 > Supported Methods of Authenticating Users
Regards,
Orchid