A Knowledge Graph entity is a uniquely identified real-world thing—such as a person, business, location, creative work, or concept—that has a structured record within a search engine’s knowledge graph. Google’s Knowledge Graph, launched in 2012, stores entities as nodes with defined attributes and relationships, drawing on sources such as Wikipedia, Wikidata, Google Business Profiles, and structured data published by websites. When a search engine recognises that a query refers to a known entity, it can return a rich result panel with authoritative information about that entity rather than—or in addition to—a list of links. For SEO and AEO purposes, having an entity record in the Knowledge Graph confers significant benefits: the entity is better understood by Google’s systems, more likely to be associated with relevant queries, and more likely to be correctly identified and cited by AI search systems that use the Knowledge Graph as a grounding source. Establishing an entity typically requires a Wikipedia article, consistent structured data across the web, and a Wikidata QID.