SDN Controller

An SDN (Software-Defined Networking) controller is like the brain of a modern computer network. It centrally manages and directs how data flows between devices, such as computers and servers. Instead of individual devices making their own decisions, the controller provides a unified plan, ensuring the network runs efficiently, securely, and can adapt quickly to changes. It uses software to control and modify network behavior in real-time, making complex networks more flexible and easier to manage. Think of it as a central command center that coordinates the entire network from a single point.