SDN (Software-Defined Networking) is a networking architecture that separates the control plane, which determines how data is transmitted from the data plane, which handles the actual transmission of data. This separation allows the control plane to be implemented in software, rather than being built into networking hardware.
SDN has a number of benefits in the networking industry. One of the key benefits is that it allows organizations to more easily and quickly change their network configurations and policies, as they can be modified in software rather than requiring physical changes to the network hardware. This makes it easier for organizations to respond to changing business needs and to implement new networking technologies. It also enables more centralized and automated management of networks. With traditional networking architectures, each device must be individually configured and managed. With SDN, the control plane can be implemented in a central location, which makes it easier to manage and monitor the network as a whole.
Therefore SDN is an important development in the networking industry, and is likely to play a significant role in the evolution of networking technologies in the coming years.