Learn More about SD-WAN Software-defined networking in a wide area of network which is shortened as SD-WAN, is basically one of the products produced by the internet and computer which are recognized as the two most important technologies of all time, and its basic function is to simplify the operation and the management of a WAN or wide area network by decoupling or separating the mechanism of control of a network hardware. The manufacturers and inventors of SD-WAN are targeting the business companies who are in need of such great product, for it is allowing the users and consumers the privilege of building a higher performance of WAN by enabling these business companies to partially or completely replace their private WAN connection technologies that are expensive, like for example a MPLS or multiprotocol label switching, into a leased lines that are inexpensive to be purchased. The business companies who are using such great technology can obtain the various benefits brought to them by such products and that includes the chances and privilege of connecting to remote branch offices to data centers and vice versa, delivering the applications and services that are required to perform the functions of these businesses and lastly, is the privilege of extending over a larger distance the computer networks that they have within their company. 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. In using the SD-WAN it enhances and replacing the traditional branch routers by using virtual appliances, and these appliances can control the application-level policies and offer an overlay of the networks with the use of a less-expensive consumer level internet links which acts as a dedicated circuit. SD-WAN products can either be a virtual appliance or physical appliance and most likely they are being placed in branch offices, small remote offices, cloud platforms and corporate data centers. The characteristics of an SD-WAN products which is a requirement for the inventors and manufacturers includes 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, a simple interface that is very easy to manage, and configure the ability of doing dynamic path selection which can be used for load sharing and resiliency purposes. The features offered by these products includes security, quality of service or QoS, flexible deployment options, simplified administration, troubleshooting, and resilience.