Which tier of the PCE houses the policy and traffic data for the Illumio solution?

The Persistence Tier is integral to the Illumio solution as it is responsible for storing the policy and traffic data. This tier provides a reliable and durable storage solution that ensures the data remains available for ongoing operations and is essential for the management of security policies across the network. By housing this critical information, the Persistence Tier allows for efficient data retrieval and ensures that the policy enforcement mechanisms have access to the necessary information for proper functionality.

In the context of Illumio's architecture, the other tiers have distinct roles: the Agent Tier focuses on the local enforcement of security policies and the collection of telemetry data, while the Service Tier handles the orchestration of the system and communication between components. The Cache Tier is primarily intended for temporary storage and quick access to frequently used data, rather than for long-term data persistence. Therefore, only the Persistence Tier is suitable for managing and housing the important policy and traffic data needed for effective security management within the Illumio framework.