What's the difference between Azure AD B2B and ADFS?

Ravikiran S 116 Reputation points

What's the difference between Azure AD B2B and ADFS?
I see that both can be used to manage collaboration with partner organizations. In what scenarios, which one should be used over the other?

Microsoft Entra External ID
Microsoft Entra External ID
A modern identity solution for securing access to customer, citizen and partner-facing apps and services. It is the converged platform of Azure AD External Identities B2B and B2C. Replaces Azure Active Directory External Identities.
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Accepted answer
  1. Andy David - MVP 138.6K Reputation points MVP

    With ADFS, you have to create the relying parties, and manage the ADFS infrastructure.
    Using ADFS also means the partner you are collaborating with needs a similar SAML type infrastructure so you can federate.
    Note that you can also federate your Azure Tenant with a partners Ident Provider as well

    B2B on the other makes all this much simpler and easier to manage. You invite the guests to collaborate allowing for more self-service and allowing you - the resource owner - to focus on the application and not the authentication.

    the B2B experience is only going to get better. Not sure you can say that about the ADFS experience, though I'm sure some will disagree :)

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