Network segmentation is a strategy used in computing and networking to divide a network into multiple segments or subnetworks, each functioning as a separate network zone. This approach improves security, efficiency, and performance by restricting access, reducing congestion, and limiting the impact of potential security breaches. Network segmentation is often implemented using technologies such as firewalls, virtual LANs (VLANs), and other network management tools. The primary goal is to control traffic flow, enhance monitoring capabilities, and isolate network segments to contain any threats and prevent them from spreading across the entire network.