Entities are identifiable objects or things characterized by their name(s), type(s), attributes, and relationships to other entities and are considered to exist in an entity catalog. Google is a semantic search engine that understands entity connections and relies on databases like Wikidata and Wikipedia for entity information. Entity optimization involves optimizing page and site structure, using important schemas, and leveraging tools like Google NLP to provide adequate context, disambiguation, and language usage. Focusing on search intent, context, and the primary entity associated with a website is crucial for successful entity optimization. The core concepts of entity optimization include entity attribute values, information dilution, language usage, site organization, and page organization. It’s important to use logical site and page structure and schema to provide context and connect content. Tools like Docusaurus and Wikipedia can jumpstart entity-focused SEO campaigns by providing a hierarchical view of entity clusters and a structured knowledge base for entity information.