Correspondence between vdc and dc in nfvi

VDC is regarded as a virtualization extension, and VDC is an abstraction and virtualization of DC functions.VDC can be regarded as a virtualization extension of DC, which realizes flexible allocation and dynamic configuration of resources by virtualizing network functions and services in DC.VDC provides a virtualized network function and service environment in the NFV architecture, which makes the deployment, adjustment, and management of network functions more flexible and efficient. VDC is a functional abstraction and virtualization of DC, which relies on the physical infrastructure in DC to support its virtualized network services. Therefore, the correspondence between VDCs and DCs is built into the NFV architecture to enable virtualization and flexibility of data center resources.