What Is a VLAN? Definition, Core Components, and Segmentation Strategies

After decades of widespread use, VLANs are an established cornerstone of network security. But as modern networks grow more complex and AI security risks increase the pressure on security leaders to strengthen cyber resilience, VLANs alone can’t deliver reliable uptime protection. To understand where VLANs fit into modern cybersecurity strategies, we’ll outline everything you need to know about how VLANs work and when to combine them with more advanced solutions.