Microsegmentation is included in CloudNetX because internal lateral movement is one of the fastest ways attacks spread, and scenarios often test whether you can limit east/west flows without breaking critical dependencies. This episode defines microsegmentation as applying fine-grained controls between internal workloads based on role, identity, or labels, rather than assuming broad trust within an environment. The first paragraph focuses on the goal: reduce blast radius by ensuring that a compromise of one workload does not automatically grant access to adjacent services, data stores, or management interfaces. It explains that microsegmentation is most effective when based on clear service boundaries and known flows, because enforcing controls without understanding dependencies leads to outages and exception sprawl. The episode frames microsegmentation as a design discipline that requires inventory, flow mapping, and a stable policy model that teams can maintain over time.