devices. For solving this problem of network ossification (i.e. inflexibility) ETSI industry specification group has formalized NFV that utilizes the virtualization to provide network functionalities of any middle box in the form of software running on commodity server. Different software code can run simultaneously, SO by using Virtualized Network Function, different devices are converged to one single device serving all the network functions. The main characteristics of NFV in the current network are: It exploits the concepts of virtualization to virtualize network function. It decouples the network functionality from the hardware and implements it over the commodity server. Reduces number of devices to be installed for setting up a network. Breaks the ossification and provide the flexibility to modify the network infrastructure easily. Reduces the Capex and Opex of deployment of new networks services. Restrains the use of different H/W devices for different network services. Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 Introduction to SDN and NFV By following the aforementioned points it can be concluded that NFV will transform the current network by removing the ossification, convergence of Network Functions on single devices, fast deployment and expansion of infrastructure and reduced Capex of Opex in network management. DIFFERENCE AND SIMILARITIES BETWEEN SDN AND NFV If we compare NFV with SDN the only difference is that SDN separates the data and control plane from the routers whereas NFV decouples the application software from hardware to run different application on single server and run it as a multi- tenant application. The network functions (NF) are abstracted into a software that can run on a range of industry standard server hardware, that are highly scalable and flexible, which can be instantiated or moved to any locations, without the need for new hardware or equipment installation. NFV and SDN are independent entities but they are complementary to each oth