To set up single sign-on (SSO) with an authentication provider, you must build a
registration handler. During SSO, the handler creates and updates users based on information
from the identity provider. For high-scale, high-performance use cases, develop a registration
handler with Apex.
Required Editions
Available in: Lightning Experience and Salesforce Classic
Available in: Enterprise, Performance, Unlimited, and
Developer Editions
To develop a registration handler, create a class that implements the
Auth.RegistrationHandler interface.
For detailed information and an example implementation, see Auth.RegistrationHandler in the
Apex Reference Guide.
To use the registration handler, when you define your authentication provider, specify Apex as
the registration handler type and then select your Apex class for the registration
handler.
If you don't want to use Apex, you can configure a registration handler with Flow Builder.
See these resources for more information.
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