Software Defined Networking (SDN) is a broad topic, but is becoming ever more important. The ability to configure our networking devices using software is blurring the lines of where our application deployments end. It encompasses everything from virtual networking appliances like AWS’ Load Balancers or CoreOS’ Flannel, to networking equipment that supports standards like OpenFlow. Where cloud providers have previously focused on compute and storage, we expect the growing array of SDN tools to deliver further efficiencies to how we handle our systems both off and on premise.