Service-based authentication can be specified in the User Interface Login URL by defining a service Parameter. After calling the service, the authentication module(s) to which the user will authenticate are retrieved from the Authentication Configuration service instance defined for the service.
The login URLs used to specify and initiate this service-based authentication are:
http://server_name.domain_name:port/amserver/UI/ Login?service=auth-chain-name
and
http://server_name.domain_name:port/amserver/UI/Login?realm=realm_name&service=auth-chain-name e
If there is no configured org parameter, the realm will be determined from the server host and domain specified in the login URL itself.