Techniques are disclosed for providing an authentication service that performs authentication of users on behalf of a relying party. The authentication service receives authentication requirements from the relying party and compares those requirements with authentication capabilities of the user and user equipment. If the authentication requirements are met, the authentication service may perform authentication using the corresponding authentication factors. If the available authentication factors are insufficient or the user fails authentication using the authentication factors used by the authentication service, the relying party may be notified that authentication failed. Upon successful authentication, the authentication service notifies the requiring party that the user has been authenticated.