Entity SEO: Building Knowledge Graphs
Modern search engines don't match keywords to pages. They extract entities from your content, map their attributes and relationships, and build knowledge graph representations.
What is an Entity?
An entity is a uniquely identifiable thing — a person, place, organization, product, concept. Search engines maintain knowledge graphs containing billions of entities and their relationships.
Entity-Attribute-Value Model
For every entity, search engines try to extract:
- Entity: The thing itself (e.g., "Tesla Model 3")
- Attributes: Properties of the entity (range, price, horsepower)
- Values: Specific values for each attribute (358 miles, $38,990, 283 hp)
How to Optimize for Entity SEO
- 1Declare your entity clearly — Use H1 and first paragraph to establish what entity your page is about
- 2Cover all attributes — Don't just mention the entity; define its properties with concrete values
- 3Use structured data — Schema.org markup makes entity information machine-readable
- 4Build entity relationships — Link related entities through your content and schema
The Central Entity Principle
Every page should have ONE central entity. Everything else on the page should support, describe, or relate to that central entity. Mixing multiple unrelated entities on one page creates semantic dilution.