The Benefits a Company can Obtain from Using SD-WAN SD-WAN which is short for software-defined networking in a wide area of network, is one of the new products of the two most important technologies namely the internet and the computer, and its main function is to simplify the management and operation of a wide area network by separating or decoupling the network hardware from its mechanism of control. The designers and inventors of this certain product aims to help the business companies who wants to replace wholly or partially their expensive private wide area network connection technologies with a lower cost leased lines, and that is by allowing them to build a much higher performance of WAN. The various benefits which a business company can gain from using such great modernized products includes the chance and the privilege of delivering the services and applications required to perform business functions, to connect remote branch offices to data centers and the privilege of extending their computer networks over larger distances. The SD-WAN products is basically designed by the inventors to address problems in the network and any other operation challenges such as service outage, network congestion, lower latency requirements of modern operations like video conferencing, streaming media, virtualized applications and desktops, and VoIP calling, bandwidth requirements for featuring high-definition video, difficulty and expensive costs of expanding WAN capability, difficulties in management of network and troubleshooting jitter and packet loss. When using the SD-WAN product it can now functions by replacing and enhancing the branch routers that are traditional by using virtual appliances, which main uses is to offer an overlay of the networks through the use of an inexpensive consumer level internet links which is designed to act as a dedicated circuit and controlling the application-level policies. The software-defined networking in a wide area of network or SD-WAN product can be a virtual appliance or physical appliance and commonly, they are being placed by the users and consumers in cloud platforms, corporate data centers, small remote offices and branch offices. The required characteristics of every SD-WAN products includes the ability of doing dynamic path selection which can be used for resiliency purposes or load sharing, the ability of supporting multiple connection types like frame relay, MPLS or multiprotocol label switching and higher speed LTE or long-term evolution wireless connections, the ability to support VPNs or virtual private network and third party services like WAN optimization controllers, web gateways and firewalls and a simple interface that is very easy to manage and configure. The features offered by these products includes security, quality of service or QoS, flexible deployment options, simplified administration, troubleshooting, and resilience.