Entity SEO, also known as entity optimisation, is an advanced approach to search engine optimisation (SEO) that goes beyond mere keyword optimisation. It focuses on providing search engines such as Google with a deep understanding of the real-world ‘entities’ – that is, people, places, organisations, things or abstract concepts – that are discussed on a website. Rather than simply matching keyword strings, modern search engines interpret content semantically by recognising and categorising entities and their relationships to one another.
This paradigm became established with the introduction of Google’s Knowledge Graph in 2012 and the Hummingbird update in 2013, which strengthened semantic search. The Knowledge Graph is a knowledge database that stores billions of entities and their relationships in order to deliver context-rich and more accurate search results.
What are entities in the context of SEO?
An entity is a uniquely identifiable object or concept that exists independently of linguistic variations or spellings and possesses its own distinct identity. Google defines entities as “singular, unique, well-defined and distinguishable things or concepts”. Examples of entities include ‘Leonardo da Vinci’ as a historical figure, a specific brand or product such as ‘iPhone’, a place such as ‘Berlin’, or an abstract concept such as ‘artificial intelligence’.
Search engines recognise entities through various signals:
- Structured data (e.g. Schema.org, JSON-LD) that provides information in a standardised format.
- Knowledge bases such as Wikipedia and Wikidata, which serve as trusted sources.
- Language models and natural language processing for analysing context and relationships within content.
- Consistent naming and linking across authoritative sources.
By correctly identifying entities, search engines can better understand the user’s intent behind a search query and display relevant content even when exact keywords do not match directly.
The relevance of entity optimisation for E-E-A-T and rankings
Entity optimisation plays a central role in Google’s E-E-A-T principles (Experience, Expertise, Authoritativeness, Trustworthiness). A website that is regarded as an authoritative and trustworthy source for specific entities increases its chances of achieving a prominent position in search results. Particularly for “Your Money or Your Life” (YMYL) topics, which could potentially affect users’ health, financial stability or safety, Google places the utmost importance on demonstrable experience, expertise, authority and trustworthiness of the linked entities.
Optimisation for entities therefore involves the following measures:
- Implementing structured data: Marking up entities on the website using Schema.org markup (preferably JSON-LD) to enable search engines to make clear associations and promote rich snippets.
- Content quality and context: Creating comprehensive, accurate and in-depth content that presents entities in a clear context and highlights their relationships with one another.
- Internal and external linking: Building a strong internal link profile that connects entities with one another, as well as links to external, authoritative sources, to strengthen your own authority.
- Consistency and branding: Consistent presentation of brands, products and people across all channels to support their recognition as distinct entities in the Knowledge Graph.
Consistent entity optimisation not only improves visibility in search results but also enhances the relevance of content for users, whilst optimally preparing a website for future algorithm updates, as Google is increasingly relying on a semantic understanding of the internet.
