this SDN definition software-defined networking SDN Definition software defined network (SDN) software defined network (SDN) this SDN definition this SDN definition their own SDN definition SDN Definition SDN software-defined networking https://www.opennetworking.org/sdn-resources/sdn-definition ONF definition this SDN definition https://www.opennetworking.org/sdn-resources/sdn-definition this SDN definition "Software-Defined Networking (SDN) Definition" SDN Definition Software Defined Networking SDN Definition SDN software-defined networking SDN Definition software-defined networking https://www.opennetworking.org/sdn-resources/sdn-definition Software Defined Networks Software Defined Networking this SDN definition SDN SDN Definition this SDN definition Software-defined networking ONF’s standard definition of SDN Software Defined Networking What is Software Defined Networking? this SDN definition SDN Definition this SDN definition five key characteristics defined by the ONF SDN Definition SDN Definition this SDN definition software-defined networking this SDN definition Software Defined Networking software-defined networking ONF definition Software Defined Networks software-defined networking SDN Definition SDN Definition