What is Azure Active Directory?
Who uses Azure Active Directory?
Azure Active Directory Integrations
Here are some stack decisions, common use cases and reviews by companies and developers who chose Azure Active Directory in their tech stack.
I want to build an Authentication, Authorization, and Token Server. I am only aware of IdentityServer and OpenIddict (apart from IDaaS offerings such as Azure Active Directory and so on...). I'm also thinking to be able to add in support for One-Time Passwords (which would warrant integration with SMS/Email services) and possibly MFA support.
What are the options that I have to be able to build my own Server, based on other stacks?