Abstract
The Sogo Shosha has been transferring its traditional core business based on a trading right to subsidiaries since 2000. The subsidiaries specialize in the operations and the parent company is responsible for business creation. The author has been trying to demonstrate that the Sogo Shosha's essential function is business creation if we evaluate it as a value co-creation enterprise system. Although there are many previous studies, they do not fully explain the essential function of Sogo Shosha from a management diagnosis viewpoint. This is because most of these studies focus mainly on the operation of a revenue model to analyze Sogo Shosha. In this paper, through a case study, the author clearly demonstrates that Sogo Shosha's essential function is business creation, even when the functions are separately held by the parent company and the subsidiary.
