SD-WAN SD-WAN Software-Defined Wide Area Networking Supports multiple connection types – MPLS, Internet via Fiber, Internet via Coax, LTE Wireless Allows for load sharing across WAN connections. Simple interface for managing WAN connections. Support VPNs as well as 3rd party services such as WAN optimization, controllers, firewalls, etc. Eliminates downtime (only power outages excluded with UPS battery backup). SD-WAN is used for both voice and data/internet redundancy.