A method, device, system, and program able to automatically optimize configuration values in software constituting an integrated system. The integrated system introduction support device collects from a configuration management database (CMDB) software configuration values related to other integrated systems sharing interactive aspects with the software constituting the target integrated system, and generates a regression model of configuration values having a high correlation among the collected software configuration values. When configuration values in a predetermined software program constituting the integrated system have been specified by the user, the integrated system introduction support device applies the specified configuration values to the regression model, and calculates an optimum value for the other software programs constituting the integrated system.