Software-defined Networking (SDN) is a revolutionary way for networks to be managed and operated. It separates the network control plane from the data forwarding plane, allowing for more flexibility and control. This helps enable automated networking processes, better security measures, and improved performance. SDN is used by organizations that require high levels of agility in their networks, such as those involving large enterprises or cloud computing applications. SDN also benefits cyber security by providing visibility into network traffic and giving administrators more control over how data is routed through the network. This means organizations can better protect themselves from malicious attacks and respond quickly to threats.