title: What is the best way to configure an application startup.cs to use both Azure AD and Azure B2C in .netcore? I am new to Identiy providers
body: <p>What is the best way to configure an application startup.cs to use both Azure AD and Azure B2C in .netcore? I see a lot of referencing indictating to use only Azure B2C, but due to the circumstances I need to use both Identity providers separately giving the users the option to choose which service.
  But I am not sure how to go about it, and after configuring the startup, how would I use distinct &quot;Authorize&quot; on the actions within the same controller?</p>