When to use custom xml policy in B2C?

Question

The documentation says "In Azure Active Directory B2C, custom policies are designed primarily to address complex scenarios. For most scenarios, we recommend that you use built-in user flows." What scenarios should custom policy be used with?

If I want to create a federated trust (SAML2P) for an ADFS IDP, is custom XML policy required?

Answer 1

@ScottM-7356

Yes, in order to federate any SAML based IDP with Azure AD B2C, you need to use Custom Policy. As of now, for built-in user flows you can add only custom OpenID Connect IDPs not SAML IDPs.

Additionally, you can federate ADFS 2016 and later as OpenID Connect IDP with as well with B2C, in that case you can use built-in user flow.

To federate ADFS as SAML IDP, you can refer to: https://learn.microsoft.com/en-us/azure/active-directory-b2c/identity-provider-adfs2016-custom?tabs=app-reg-ga

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