sd-wan definition

In order to bridge the gap between the performance and stability of an MPLS or leased line and the cheaper option with VPN, a Software Defined WAN (SD-WAN) solution was developed in 2014. SD-WAN can utilize multiple types of network connectivity and interlink them simultaneously to create a resilient and robust corporate data network. “SD-WAN is a software based solution to simplify delivery of WAN services and network operations. As such, it simplifies the deployment of customer branches by providing connectivity when and where it is needed.” For example, enterprises with multiple sites that require connectivity can leverage on an SD-WAN solution. SD-WAN can utilize all of these network transport and dynamically determine what type of traffic can pass through-- ensuring the best path for connectivity and thereby assuring optimum location, availability, and resiliency. The SD-WAN’s value revolves around simplifying delivery of network service and operation via software-deployed central management servers. In summary, here are the main reasons why there is a need to shift to SD-WAN: SD-WAN can use multiple network access technologies: DSL, LTE, Leased Lines, MPLS and GPON (Gigabit Passive Optical Network), thereby allowing enterprises to utilize multiple kinds of connections to their network. SD-WAN provides business agility due to the flexible nature of dynamically choosing the connection path in order to maintain high network uptime. Read more in our articles including "Corporate Connectivity through the decades: From Leased Lines to SD-WAN" and "New Paramount offer challenges Netflix’s Warner Bros. deal".