Which of these is NOT a VEN enforcement mode?

The VEN (Virtual Enforcement Node) enforcement modes in Illumio Core are designed to provide varying levels of security and visibility based on business needs. The enforcement modes include "Idle," which does not enforce any policy but allows for monitoring; "Visibility Only," which offers insight into traffic without applying any restrictions; and "Full," which actively enforces the security policies to control traffic between workloads.

The option "Express" is not recognized as a valid VEN enforcement mode within the Illumio framework. Instead, the primary modes focus on how enforcement is applied or not applied, highlighting different strategies for security posture without including an "Express" designation. This demonstrates how Illumio provides flexibility in choosing the right approach to workload security based on specific requirements or operational contexts.