SDN stands for Software-Defined Networking, which is a networking architecture that separates the control plane and data plane of network devices. In SDN, the control plane is moved to a centralized controller, where it can be programmed and managed using software. This allows network administrators to manage the network from a single point of control, making it easier to configure and optimize the network.
SDN technology enables dynamic and automated management of network resources and traffic flows through programmable interfaces that enable policy-driven optimization of application delivery. SDN also supports virtualization, enabling multiple logical networks to run on top of a single physical infrastructure.
SDN has gained popularity due to its flexibility, scalability, and cost-effectiveness. It is widely used in cloud computing environments where there are large numbers of virtual machines and applications running on different servers. By separating the control plane from the data plane, SDN simplifies network management, improves performance, and reduces costs associated with hardware upgrades.
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