権限委譲システム、アクセス管理サービスシステム、および権限委譲システムを制御する制御方法

摘要

In sequential processing including issuance of an approval token from a user to a cooperation source service via an access management service, a system for delegation of authority confirms whether each of the user and the cooperation source service has a sufficient authority to execute a service of a cooperation destination before issuing the approval token.