How to authenticate multiple active directory user on single application in azure

Question

I have created two active directory in azure which connect with two different local active directory (two different companey)

I Have application in which i want both azure active directory user can login on same instance of application i don't want to host two instance of application .

After authentication i need to to check from which active directory user belongs .

Any Help would be really appreciated since i am struggling from last three days

Answer 1

You need to create a multi-tenant application, like pksorensen's comment states. Essentially what you want to do is register the application in one of your directories and update its configuration to make it multi-tenant capable (discussed in the links below). When a user from another directory signs in to the application, your app starts a consent flow by hitting Azure AD's common authentication endpoint (different from your tenant-specific one), and then displays a consent dialog. After the user consents, Azure AD registers the application in the other directory.

All the information you need about implementing this scenario:

• Brand new code sample for a multi-tenant web application with sign-on
• Info about multi-tenant apps, how to make an application multi-tenant, and the consent experience
• The Authentication Scenarios for Azure AD topic and its Web Browser to Web Application section that describes the technical details of the protocol flow and how it all works