What are the three main identity models Azure Active Directo

Accepted answer

http://www.c-sharpcorner.com/article/understanding-the-office-365-identity-management/

https://support.office.com/en-us/article/Understanding-Office-365-identity-and-Azure-Active-Directory-06a189e7-5ec6-4af2-94bf-a22ea225a7a9

I think your question suits more to interviews section, rather than this forum.

follow the link:http://syba.enfrasys.com/active-directory/