Know your gear
SD-WAN is similar to Software-Defined networking in that is decouples the wide area network from the underlying transport network. Companies use SD-WAN to create a software-defined overlay network that is independent from the carrier or physical underlying network. This network overlay is often used to improve network performance and reliability. Additionally, because a Software-Defined WAN (SD-WAN) is independent of the underlying network, remote sites can quickly and easily be provisioned using the locally available bandwidth.