This approach represents a network architecture where network control is decoupled from the forwarding plane and is directly programmable. A key characteristic is the abstraction of network resources, enabling centralized management and automation. For example, instead of configuring individual network devices, an administrator defines policies centrally, which are then implemented across the network infrastructure.
The significance of this paradigm lies in its enhanced agility, reduced operational costs, and improved scalability. By centralizing control, network administrators gain the ability to rapidly adapt to changing business needs, optimize resource utilization, and streamline network management tasks. Historically, network configurations were static and complex, requiring manual intervention for even minor changes. This new model offers a dynamic and responsive alternative.
