The video introduces you to a concept of Endpoint Security Group (ESG) in Cisco ACI 6.0. The lab walks through migrating existing EPG endpoints into ESGs using various selector types including EPG selectors, IP tags, MAC tags, and VMM-based attributes like VM name and VM tags. This demonstrates how each selector type affects switching versus routed traffic enforcement. The key takeaway is that ESGs provide a flexible, app-centric security model that supports multi-BD grouping and granular endpoint classification, making them well-suited for greenfield deployments or as a migration path from EPG-based policy.
