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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 benefits that a business company can obtain from using such great technology are the privilege of extending their computer networks over a larger distance, to deliver the applications and services required to perform business functions and to connect remote branch offices to data centers and vice versa. The products that are called as SD-WAN are designed by its manufacturers to address operational challenges or any other network problems that are existing, and some of the examples for these includes packet loss, 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 and jitter. Through the use of the SD-WAN, basically it replaces and enhances the traditional branch routers through the use of virtual appliances and the appliances can now control the level of the application policies and can offer an overlay of the networks by using an inexpensive consumer level internet links that will act as a circuit that is dedicated. An SD-WAN product can be a physical appliance or a virtual appliance and they are commonly placed in small remote offices, branch offices, corporate data centers and cloud platforms. The various required characteristic of every SD-WAN products includes 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 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 features offered by these products includes security, quality of service or QoS, flexible deployment options, simplified administration, troubleshooting, and resilience.

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