REPLACE SYSTEM AND REPLACE METHOD

An AI/big-data processing module identifies, for each of a plurality of replacement patterns, based on an actual result value of a resource usage status, a leveling index value in a case in which at least one application has been replaced onto another execution platform. A policy manager module determines, based on the leveling index value identified for each of the plurality of replacement patterns, a replacement pattern relating to replacement to be executed. A life cycle management module, a container management module, and a configuration management module replace at least one application based on the determined replacement pattern.