The prime objective of this article is to the Migration of SDN and WAN. Even though SDN does supply benefits for anyone in which work with it, this system that is today in use is actually one who is actually worldwide and is will no longer local. This is why it is advantageous for computer software defined networking to supply into the wide region system (WAN). This enables this to help cover by using a greater physical region to help plus it can wrap a couple of specific geographic area system collectively. Those wide-area sites will often be hooked collectively via open sites, such as the cable connection process or even ringing process. It can also be achievable to help wrap the WAN collectively via satellites or even via rented lines. The internet would be the largest example of a WAN.