Wikidata
Wikidata is the free, structured knowledge base that feeds Wikipedia, search engines, and numerous AI models. An entity correctly entered there anchors its machine-readable identity card.
In practice
Appearing there requires notability: independent sources, verifiable existence. For an organization, a well-maintained Wikidata item — official name, legal identifiers, website, relationships — propagates to the Knowledge Graph and AI assistants. You do not write your publicity there; you deposit your facts, sourced.