What is Software-defined WAN (SD-WAN)?
Software-defined WAN (SD-WAN) is a fundamentally different approach to WAN design that better deals with the performance, economic and security challenges and security challenges created by data traffic growth, cloud, mobility and the Internet of Things.
SD-WAN introduces a powerful, software-based service layer that de-couples services delivered to users and sites from the underlying physical network connections. This means you can swap out expensive WAN connections, like MPLS, for lower-cost Internet. It ensures you're making the most use of all your capacity at any given time, providing you with significant choice and flexibility with your networks