| 主权项 |
1. A server system including a service provider capable of providing a predetermined service using an external service, the server system comprising:
an issuing unit configured to issue authorization information in response to an authorization operation, which is performed by a user via an authorization confirmation screen displayed on a client, for granting the server system a right of the user with respect to the external service; a storing unit configured to store the authorization information; a providing unit configured to provide the predetermined service using the external service without use of authentication information about the user, by using the authorization information stored by the storing unit; and an updating unit configured to update, in a case where the authorization information stored by the storing unit is old authorization information issued in another server system that is different from the server system, the old authorization information with new authorization information according to a case in which information about authorization that is identified based on the old authorization information satisfies a condition. |
