The term “ontology” is now en vogue. Why? Agents, and the LLMs that power them, need relevant business context. Before you buy into an ontology, ask the vendor: “When the ontology gets our business wrong, how do our people correct it—and what still depends on you?” The answer will tell you a great deal about whose model of the business you are buying into. It also points to the larger stakes: your ability to improve that model as the business changes, and to keep that investment useful if you…