**The big picture:** Enterprise software vendors are increasingly touting data ontology as a critical component for AI, but experts warn it could lead to a new, subtle form of vendor lock-in for businesses. **Why it matters:** Companies risk losing control over their valuable workforce data and AI capabilities if they don't actively manage their data ontologies, impacting future talent strategies and operational flexibility. **Between the lines:** - Ontology defines data values, origins, and usage, providing crucial context for AI agents. - Vendors like SAP, Oracle, and Palantir are integrating ontology into their offerings, often implying their solution is the only path to AI intelligence. - Experts advise enterprises to own their business definitions and separate them from vendor implementations to maintain data neutrality. **Staffing & HR impact:** HR and staffing leaders must ensure their organizations retain ownership and control of workforce data ontologies to prevent vendor dependence, which could limit future talent analytics and AI-driven HR tool adoption. This directly impacts the ability to leverage AI for talent acquisition and management effectively. **The bottom line:** Proactive data governance around ontology is essential to avoid becoming passively locked into vendor ecosystems, preserving agility in an AI-driven labor market.