A cloud-configuration visualization system configured to connect to one or more cloud service provision systems providing a cloud service, the system comprising: a client apparatus and a server apparatus, the client apparatus comprising a cloud connection information reception part configured to receive a cloud connection information constructing a cloud environment from a user, and a configuration display processing part configured to perform display control on a screen displaying a configuration of the cloud environment, the server apparatus comprising a cloud connection information part configured to store and register the cloud connection information received by the cloud connection information reception part of the client apparatus in a cloud connection information database, DB, and a configuration information acquisition processing part configured to acquire the cloud configuration information constructed in the cloud service provision system from the cloud service provision system according to a cloud configuration information acquisition request from the configuration display processing part of the client apparatus, wherein the configuration display processing part having received a request command for displaying cloud configuration from the user is configured to extract a cloud ID for acquiring cloud configuration information from the cloud configuration display request command, and transmit the configuration display command of the extracted cloud ID to the configuration information acquisition processing part, wherein the configuration information acquisition processing part is configured to acquire a cloud connection information from the cloud connection information DB based on the cloud ID, specify (S802-S807) a cloud service provision system acquiring the cloud configuration information based on the acquired cloud connection information, and transmit the cloud configuration information acquired from the specified cloud service provision system to the configuration display processing part, and the configuration display processing part is configured to generate a cloud configuration diagram using configuration component icons of each configuration component and connection information, based on the cloud configuration information received from the configuration information acquisition processing part, and display the generated cloud configuration diagram on the screen. a client apparatus and a server apparatus, the client apparatus comprising a cloud connection information reception part configured to receive a cloud connection information constructing a cloud environment from a user, and a configuration display processing part configured to perform display control on a screen displaying a configuration of the cloud environment, the server apparatus comprising a cloud connection information part configured to store and register the cloud connection information received by the cloud connection information reception part of the client apparatus in a cloud connection information database, DB, and a configuration information acquisition processing part configured to acquire the cloud configuration information constructed in the cloud service provision system from the cloud service provision system according to a cloud configuration information acquisition request from the configuration display processing part of the client apparatus, wherein the configuration display processing part having received a request command for displaying cloud configuration from the user is configured to extract a cloud ID for acquiring cloud configuration information from the cloud configuration display request command, and transmit the configuration display command of the extracted cloud ID to the configuration information acquisition processing part, wherein the configuration information acquisition processing part is configured to acquire a cloud connection information from the cloud connection information DB based on the cloud ID, specify (S802-S807) a cloud service provision system acquiring the cloud configuration information based on the acquired cloud connection information, and transmit the cloud configuration information acquired from the specified cloud service provision system to the configuration display processing part, and the configuration display processing part is configured to generate a cloud configuration diagram using configuration component icons of each configuration component and connection information, based on the cloud configuration information received from the configuration information acquisition processing part, and display the generated cloud configuration diagram on the screen.