Microsegmentation
Microsegmentation is a network security technique that divides a data center or cloud environment into fine-grained, isolated segments to control traffic flow between workloads. It applies security policies at the individual workload level (e.g., virtual machines, containers, or applications) rather than relying on traditional perimeter-based defenses. This approach enhances security by limiting lateral movement of threats within a network, reducing the attack surface and enabling zero-trust architectures.
Developers should learn microsegmentation when building or securing applications in cloud-native, containerized, or virtualized environments, as it is crucial for implementing robust security in modern infrastructures. It is particularly valuable in DevOps and DevSecOps workflows to enforce least-privilege access, comply with regulations (e.g., GDPR, HIPAA), and protect against insider threats or breaches that exploit network vulnerabilities. Use cases include securing multi-tenant clouds, isolating sensitive data in financial or healthcare apps, and enhancing resilience in microservices architectures.