1. A management server for managing a service system virtually built by using a plurality of components provided by one or more data centers, the management server being connected with a management terminal and the one or more data centers and comprising: a processor configured to: assign identifiers unique to the service system to components connected via a network among the plurality of components used to build the service system, and record each of the identifiers associated with connection information indicating a connection with another component assigned one of the identifiers and a time of the building of the service system; record, upon detection of a change in the components included in the service system or a change in the connections of the components, the identifier of the changed component associated with connection information indicating the changed connection and a time of the change of the connection; collect monitoring information indicating operation conditions of the components assigned the identifiers and monitoring times, which are times of creation of the monitoring information, from the one or more data centers; record the monitoring information associated with the monitoring times; and identify and output, upon receipt of information designating a time from the management terminal, connection information and monitoring information on the service system as of the designated time based on the identifiers of the components associated with the designated time.