After 20+ years building enterprise ERP software on CA Plex, SODISA faced a familiar challenge: evolving user expectations without abandoning the business logic that took decades to perfect. In this session, we share three real-world patterns we used to extend our Plex system outward. Including integrating facial biometric recognition directly within Plex, exposing Plex business logic through a modern .NET API to power a web employee portal, and building new web interfaces that coexist with our existing Plex model. No theory, just honest lessons from a team that decided to orchestrate around Plex rather than walk away from it.