There are some similarities between SD-WAN and WAN optimization, the name given to the collection of techniques used to increase data-transfer efficiencies across WANs. The goal of each is to accelerate application delivery between branch offices and data centers, but SD-WAN technology focuses additionally on cost savings and efficiency, specifically http://martindimrt.blogzet.com/immer-meine-secure-access-service-edge-um-zu-arbeiten-27391769