Blog entry by emma emily
The software-defined wide-area network (SD-WAN or SDWAN) is a specific application of software-defined networking (SDN) technology applied to WAN connections such as broadband internet, 4G, LTE, or MPLS. It connects enterprise networks — including branch offices and data centers — over large geographic distances.
SD-WAN is an acronym for software-defined networking in a wide area network (WAN). SD-WAN simplifies the management and operation of a WAN by decoupling (separating) the networking hardware from its control mechanism.
As long as guaranteed QoS is needed, there will be a need for reliable transport. It can be MPLS or any other transport, but not SD-WAN with pure Internet links. There's a big difference here. MPLS is a WAN technology where a user has full control over traffic engineering.
Transport independence: Guaranteeing zero network downtime, Cisco SD-WAN automates application flexibility over multiple connections, such as the Internet, MPLS, and wireless 4G LTE. Network services: Rich networking and security services are delivered with a few simple clicks.
Read more: SD-WAN deployment