Network Segmentation is the practice of dividing a computer network into smaller, manageable sections or segments. This approach enhances security and performance by limiting access to sensitive data and reducing congestion. Each segment can have its own security policies, making it easier to monitor and control traffic. By isolating different parts of a network, organizations can contain potential threats and prevent them from spreading. For example, if a cyberattack occurs in one segment, it can be contained without affecting the entire network. This strategy is essential for maintaining the integrity and efficiency of modern networks.