SERVICE PROVIDING SYSTEM, LINKAGE INFORMATION PROVIDING SERVER, AUTHENTICATION SERVER, SERVICE PROVIDING SERVER, SERVICE PROVIDING METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To facilitate utilization of linked services by effectively using relevant information showing the linkage relation between linked services.

SOLUTION: A linkage information DB server 4 stores linkage information showing the linkage relation of linked service processing, and a linkage information providing server 5 acquires, according to a request from a user terminal 3, optional linkage information from the linkage information DB server 4 and provides it to the user terminal 3.

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