Oracle's Corente Cloud Services Exchange (Corente CSX) is a cloud-based software- defined networking (SDN) service that enables distributed enterprises to deliver trusted connectivity services to and from any location with less complexity, in significantly less time, and at a greatly reduced cost, when compared to more traditional approaches. The Corente Services Gateway (CSG) is a distributed virtual appliance located at the network edge that provides secure endpoints for virtual private networks over any IP networks with zero-touch installation. Available as a Service (VPNaaS) as well as complete self service deployment in the users account.