Authentication Mechanism for Dynamics GP 2016

Hi Dynamics GP Team,

I am working on analyzing the Dynamics GP 2016 connector. I wanted to know about the authentication mechanisms being used for GP 2016.

I have seen the references of Active Directory and Windows authentication mentioned in some queries. Are these the only modes of authentication available for GP?

And is the same applicable to GP Web Client as well?

Regards,

Rajinder Singh