What is Micro-Segmentation?
Micro Segmentation is a Zero Trust network security approach that breaks down a flat network where any compromised device can potentially communicate with any other device into small, isolated segments with strictly controlled communication rules between them. By limiting what each workload, application, or user can communicate with, micro segmentation contains the blast radius of a breach. Even if an attacker gains a foothold in one part of the network, they cannot easily pivot to other systems. This is particularly important in cloud and data center environments where traditional perimeter-based security provides no protection once an attacker is inside. Micro segmentation is a key pillar of mature Zero Trust architecture.