Security boundaries are essential for creating logical separations between systems, users, and data flows. In this episode, we explore how boundaries are defined and enforced, using both physical and logical mechanisms. You’ll learn about concepts like trust zones, network segmentation, VLANs, virtualization, and sandboxing. We also discuss isolation techniques that prevent lateral movement, contain breaches, and ensure critical assets remain protected. Proper use of boundaries and isolation helps reduce attack surfaces, enforce policy, and support compliance. These principles are vital for scalable and secure infrastructure design.