Software-Defined Wide-Area-Network (SD-WAN) is defined as a virtual WAN architecture that allows enterprises to securely and efficiently connect users to applications. This technology solution brings unparalleled agility and cost savings to networking. With SD-WAN, organizations can deliver more responsive, more predictable applications at lower cost in less time than the managed MPLS services traditionally used by the enterprise. IT becomes far more agile, deploying sites in minutes; leveraging any available data service such as MPLS, dedicated Internet access (DIA), broadband or wireless; being able to reconfigure sites instantly; and more easily supporting migration to hybrid cloud.