Software Defined Wide Area Network
Software defined wide area network (SD-WAN) is a type of computer network that enables bonding of multiple internet access resources – such as DSL, cable, cellular or any other IP transport – to provide reliable high throughput data channels.
SD-WAN abstracts connectivity options – like multiprotocol label switching (MPLS), mobile and broadband – to create a virtual enterprise wide-area network (WAN).
An SD-WAN has a virtual WAN architecture and a software-driven technology. A key element of an Software defined wide area network is its centralized control, so that network connections, security mechanisms, policies, application flows and general administration are separated from the associated hardware.
For security considerations, data communications between offices are typically transmitted via VPN and funneled through the main office facility. Read more..