Provided is to appropriately allocate resources among the versions in the system, the resource setting control device includes: determination unit that extracts a load pattern of a service request in a specific period of time from a) a request history, including information of a group, the requested version, and a resource usage during execution of the service, and b) the request history in operation information storage, and updates the reference pattern when detecting that change from the reference pattern is beyond a specific range; and change unit that determines, for each of the versions, a resource request amount, based on a peak value of the resource usage in the specific period of time and a number of server devices providing the version, when detecting the load pattern change, and outputs the determined resource request amount.