A: VMware vCloud Director aggregates the resources of one or more vCenter Server resource pools for the purpose of provisioning those resources to one or more customers. vCloud Director’s multi-tenancy features let it logically segregate cloud resources for provisioning to multiple customers.
Customers who interact with vCloud Director could be internal business units and organizations or external customers. Resources within each vCenter server resource pool are collected into Provider Virtual Datacenters (vDCs). Those resources are later provisioned to customers as Organization Virtual Datacenters.
An Organization vDC serves as the boundary for the virtual resources provisioned to an organization. Those resources can be allocated via a range of allocation models that are configurable within vCloud Director.