Virtela / NTT
Virtela was acquired by NTT Communications in January 2014. While Virtela doesn’t market itself as SD-WAN, the company does offer functionality similar to SD-WAN with their global cloud product offerings. In brief, Virtela abstracts away the variety of carriers, providing global service guarantees regarding different traffic classes from ending of the earth to the other. This specific core service is presented being a component of a new variety of products, which include IP VPN, Cloud-Based Program Acceleration, and Virtualized Contribution Networking.
Enterprises consuming these types of services connect to their own endpoints, or to endpoints in public clouds. The end user experience is optimized by Virtela’s platform, meaning that Virtela sorts out the best way across the global Internet for a given application beyond what comparatively simple BGP routing is able to achieve.
Apart from vendors making SD-WAN products, there are shops devoted to SD-WAN solutions that can assist you to pick the system that makes sense with regard to your traffic mix, software deployment model, and company requirements.