 Benefits of Network Services Virtualization Though virtualization of network services has featured a lot of advantages, they give rise to some major concerns regarding NFV practices and recommendations as listed below: NFV orchestration evaluates the degradation of individual services/functions resulted due to the introduction of the Ohypervisor and multiple virtualized services on the same physical hardware. It also supervises the hypervisor and host resources to troubleshoot, and hereby resolving the contention of physical resources. An introduction of hypervisor results into a Single Point of Failure (SPOF) which may affect the working of virtual machines on a host and other defined chains of network services. Hypervisor comprising a virtual switch has the ability to control traffic in order to avoid application failure while serving multiple vNICs of various virtual machines. The hypervisor also provisions the feature of management awareness that distributes and isolate the applications when the failure of a physical machine state like NIC port takes place. Moreover, the management awareness by hypervisor is bridged by SDN controller and Orchestration cooperation. CHALLENGES IN SUPPORTING NETWORKING THROUGH VIRTUALIZATION Today's environment where networks are static and quite expensive to manage imposes a number of challenges in supporting NFV: Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 Virtualizing Network Functions in Software-Defined Networks Real-Time and Dynamic Provisioning: The automatic deployment of VNFs, VNF FGs and their management in the NFV infrastructure. Provisioning of physical and virtual infrastructures with seamless control. Carrier-grade should allow robustness and scalability. Openness and Interoperability: The network elements and VNFs from different vendor must co-exists. The NFV allows the interoperability and co- existence through open interface NFV allows network elements and VNFs from multiple vendors interoperate and co-exist through API