What is network segmentation?

Network segmentation is the practice of dividing a computer network into smaller, isolated subnetworks to improve security and performance. By separating systems and data, organizations can limit the spread of cyber threats and control user access to sensitive information. This approach helps contain breaches, simplifies compliance, and enhances the efficiency of network management. Common techniques include using VLANs, firewalls, and access control lists to enforce boundaries between segments.