Entity schema is structured data markup that explicitly defines what an entity is — its type, attributes, and relationships — using schema.org vocabulary embedded in JSON-LD. Common entity schemas include Organization, Person, LocalBusiness, Product, and Event.
Entity schema is how a brand tells AI crawlers, in unambiguous machine-readable terms, exactly what it is and what it does. Without entity schema, AI systems must infer entity type from page content — a less reliable process. With it, the brand’s identity is declared explicitly on every page that carries the markup, reducing misclassification and strengthening entity confidence.