By transitioning to SD-WAN, enterprises can reduce dependency on expensive MPLS connectivity. SD-WAN involves the creation of a virtual WAN overlay, which means customers don’t have to overhaul existing WAN investments. Rather, they can obtain quality WAN access by any available data service (LTE, broadband or MPLS).
What is Pligg?

Pligg is an open source content management system that lets you easily create your own user-powered website.