Entity SEO: Building Authority in the Knowledge Graph

In knowledge graph terminology, an entity is a uniquely identifiable thing with defined attributes and relationships. Google's Knowledge Graph is enormous: in 2020 Google said it held over 500 billion facts about five billion entities, drawn from hundreds of sources across the web, including Wikipedia. Those entities include companies, products, people, places, and concepts. AI language models develop their own internal representations of entities during training — not as explicit database entries, but as patterns of associations learned from processing very large volumes of text. When an LLM "knows" about your brand, it has learned that your brand name is associated with certain attributes (what you do), relationships (your industry, competitors), and qualities (reputation, scale). The strength and accuracy of this association determines whether the model will mention your brand in relevant contexts. Building entity authority means ensuring that these learned associations are strong, accurate, and comprehensive. This is the foundation on which all other AEO ranking factors build.

Entity authority is built through a stack of increasingly authoritative sources. At the base level, ensure your brand has consistent, accurate information on your own website with comprehensive Organization schema markup. The second level involves directory and citation presence: Google Business Profile, Crunchbase, LinkedIn Company Page, industry directories, and business databases. The third level is authoritative third-party coverage: Wikipedia (or at minimum, a Wikidata item, which gives your entity a unique Q identifier, label, description, aliases, and structured statements), industry publications, news coverage, and authoritative review sites. The fourth and highest level is cross-source corroboration: when multiple independent authoritative sources describe your brand with the same key attributes, AI models develop strong confidence in that characterization.

Start with an entity audit. Search your brand name on Google and look for a Knowledge Panel. If one exists, verify its accuracy; Google lets eligible entities get verified and claim their knowledge panel, and anyone can suggest changes through the panel's Feedback link with supporting URLs. Check Wikidata for your brand's entry and add or correct information if needed. Search your brand in ChatGPT, Claude, and Perplexity to see how each model currently understands your entity. Next, fill gaps systematically. If you lack a Wikipedia article and are notable enough for one, develop it following Wikipedia's notability guideline for organizations and companies, which requires significant coverage in multiple reliable, independent secondary sources. Because of Wikipedia's conflict-of-interest guideline, do not write it yourself: propose changes on talk pages or submit a draft through Articles for Creation. If your Crunchbase profile is incomplete, update it with current funding, team, and product information. Ensure your LinkedIn company page accurately describes your offerings. Then focus on earning authoritative mentions. Pursue industry publications for feature articles, contribute guest expertise to established media, and participate in industry events that generate coverage. Every independent mention builds another data point that AI models can learn from.

Use structured data to explicitly define your entity's attributes and relationships. Google's Organization structured data documentation recommends properties such as alternateName, foundingDate, numberOfEmployees, logo, and sameAs, and notes that some properties are used to disambiguate your organization from others. Your schema.org Organization markup should include: official name, alternative names, founding date, founders, number of employees, industry category, and all official URLs. Use the sameAs property to link your entity to Wikipedia, Wikidata, Crunchbase, LinkedIn, and social profiles. Schema.org defines sameAs as the URL of a reference page that "unambiguously indicates the item's identity," such as its Wikipedia page, Wikidata entry, or official website. For products, use the Product schema with brand, manufacturer, and category relationships. For people (founders, executives), use Person schema linked to the organization. The more explicitly you define these entity relationships in structured data, the cleaner the signal AI models receive about who you are and how you connect to the broader knowledge landscape. This approach is particularly powerful when combined with a comprehensive content strategy that demonstrates topical authority in your space.