Microsegmentation divides the network into granular security zones down to the workload level, so that even if an attacker breaches one segment they cannot move laterally to reach crown-jewel systems — a direct response to the East-West traffic exploits behind breaches at SolarWinds, Colonial Pipeline, and countless healthcare networks. Regulators and cyber insurers are increasingly treating workload isolation as a prerequisite for coverage and compliance, aligning microsegmentation with PCI DSS 4.0, HIPAA, and NIST SP 800-207.
Related: Zero Trust ZTNA · Zero Trust for OT · CNAPP · PCI DSS · HIPAA