Abstract
The popular subj ect in the circle of communication technology is software defined networking (SDN), many researchers have been running in this area. However, implementation or testbed results is very hard. That's why some of these actual research works just to provide theoretical software defined networking. New research illustrates that software-defined WANs (SDWANs) improve QoS, facilitate network control, and connect branch offices to a main group network, or connect data centers isolated by intervals. SDW AN helps the network to provide consistent and unified security to all our networks. In this study, we come to an overview of Software-defined Wide Area Network (SDWAN) architectures and how it works, a qualitative comparison in terms of features such as virtualization and programmability. As well as, a Software-defined Wide Area Network (SDWAN) benefits from Internet-based wide area networks (WANs) to enable multi-service networks and VPN services. As per analysts, the SD- W AN market is predicted to grow 8 times by 2021.
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