What does the term "centralized control" imply in the context of SDNs?

The term "centralized control" in the context of Software-Defined Networking (SDN) implies that the management of network operations is conducted from a single control point. This is a key characteristic of SDNs, where a central controller has the visibility and authority to manage the entire network infrastructure. The centralized control model simplifies network management by allowing network administrators to configure and adjust network policies from one location, resulting in improved efficiency and agility.

In this architecture, the central controller communicates with the network devices, using protocols such as OpenFlow, to direct packet forwarding and other operational tasks. This leads to consistent policy enforcement and allows for dynamic adjustments to network traffic based on real-time conditions or changing business requirements.

The other contexts associated with distributed control, independent operations of network devices, and manual orchestration do not accurately reflect the centralized nature of control within SDNs. In contrast to these approaches, centralized control fosters a more streamlined and integrated network environment.