Definition
Entity SEO is the practice of establishing your brand, products and key people as recognized entities in search engines' knowledge systems — not just keywords on a page, but distinct things with verified attributes and relationships. Google's Knowledge Graph, Bing's entity index, and AI models' parametric memories all operate on entities: they store facts about named things (founding year, headquarters, product categories, executive names) and surface them in answers. For GEO, entity SEO is foundational because AI engines trust entities they can verify across multiple sources. Practical entity SEO work includes: publishing consistent Organization JSON-LD with @id and sameAs, maintaining accurate profiles on Wikipedia, Crunchbase, G2 and LinkedIn, ensuring NAP (name, address, phone) consistency across directories, and building editorial mentions that use your exact brand name in context. The test is simple: ask an AI engine "What is [your brand]?" — if it returns a confident, accurate description, your entity is established; if it hedges or hallucinates, your entity signals are weak.