ell as easy migration. INTRODUCTION Information and Communication technology (ICT) has seen evolution of new technologies and trends such as mobile and cloud computing, social media and IOT. These new technology requires ubiquitous accessibility, high bandwidth and dynamic management (Xia, Wen, Foh & Niyato, 2015). The current networking technology seems inept to satisfy these dynamic requirements due to ossification inherited in the traditional one by the use of propriety hardware devices. Software defined network (SDN) and Network function virtualization (NFV) are the two DOI: 10.4018/978-1-5225-3640-6.ch001 Copyright © 2018, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Downloaded: 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 Introduction to SDN and NFV new networking paradigms that are changing the way the traditional networks are functioning. These new technologies seem promising in handling the current and future requirements in the ICT. SDN (ONF White Paper 2012) is a technology which works on the concept of centralization to provide centralized decision making for the entire network whereas NFV (NFV-ISG, White paper 2015) is a technology which is based on virtualization to virtualize the network functions (NF). SDN decouples the control plane and the data plane from the traditional networking devices i.e. routers leaving behind data plane intact with the device making them mere forwarding devices following the decision of the centralized controller. The benefit of centralization is to have a centralized information regarding topology which provides easy monitoring and fault tolerance. SDN also provides the network programmability which helps to cope the dynamic nature of today's networks. NFV, on the other hand, is based on virtualization of network functions in the form of software running over high end server. This kind of virtualization helps in easy setup of networks as well as easy migration. The 