In my scenario I have Tenant A with B2C and Tenant B with normal AAD. I need enable to all users from Tenant B sign in to my application in Tenant A B2C. For now I do it with IDP and it works fine, but not so clear. When I tried to B2B direct connect I can connect, but user not create in Tenant A B2C tenant but maybe I set something bad. Is there any way or IDP is the best way? Thank you for help

CodePudding user response：

Yes, federation is the best way.

This allows an Azure AD user to sign into a B2C application.