Entity Salience measures how prominently an entity (person, place, concept) figures within a piece of content. High salience indicates that the entity is central to the content’s topic rather than a passing mention. LLMs use entity salience to determine which pieces of text are most relevant to a given query; hence, for AI SEO, crafting content that emphasizes target entities early and throughout key sections amplifies your chances of being selected as a “top answer” by an AI model.