Office 365 API that is not connected to Azure Active Directory

Question

I want to know one thing very clear. I need to get all users of Office 365 using C#. For that, there are lots of api but all of them are connected with Azure Active Directory. (For eg. Graph api which is also connected to Azure )

But I want api that is not connected with Azure Active Directory to get all users of Office 365.

Is there any?

Answer 1

No, you cannot access Office 365 users without accessing Azure Active Directory. Office 365 by default uses Azure AD in the back end to manage users.

Please see this article for a more detailed explanation: https://support.office.com/en-us/article/understanding-office-365-identity-and-azure-active-directory-06a189e7-5ec6-4af2-94bf-a22ea225a7a9