1. A cloud-computing-facility aggregation and application-support subsystem within a multiple cloud-computing-facility aggregation that includes multiple, operationally distinct cloud-computing facilities, the cloud-computing-facility aggregation and application-support subsystem comprising: a cloud-connector server that provides an electronic cloud-aggregation management interface and that is installed within one of the multiple, operationally distinct cloud-computing facilities; multiple cloud-connector nodes, each single cloud-connector node installed in a virtual data center management server, cloud director, or management system within each cloud-computing facility of the multiple cloud-computing-facility aggregation, each cloud-connector node providing an electronic interface through which the cloud-connector server accesses services provided by the cloud-connector node and that each accesses a cloud-management interface within the cloud-computing facility in which the cloud-connector node is installed through which the cloud-connector node accesses local cloud-management services on behalf of the cloud-connector server; and multiple service-provider nodes, each service-provider node installed in a virtual data center management server, cloud director, or management system within each cloud-computing facility of the multiple cloud-computing-facility aggregation, each service-provider node accessing a cloud-director management interface to obtain information related to tenant-associated virtual data centers provided by the cloud-director and information related to multi-tenant virtual data center from which the tenant-associated virtual data centers are provided and transmit the obtained information through an electronic interface to the cloud-connector node.