A resource management system includes a memory unit that stores therein performance information of a system; and a processor configured to refer to the performance information and determine whether a requirement for first performance information corresponding to a first system is satisfied when a function of the first system, originally implemented by using a resource of a first data center, is implemented by using a resource of a second data center, and implement the function by using a resource of the second data center, upon determining that the requirement for the first performance information is satisfied, and thereby build a configured system satisfying the requirement for the first performance information by using the resource of the first data center and the resource of the second data center.