Semantic SEO
Semantic SEO is the practice of optimising around concepts and entities rather than individual keywords, so search engines and AI engines understand the full meaning of a page.
Semantic SEO is the shift from optimising for exact keywords to optimising for topics, concepts and entities. It emerged around 2015 when Google's Hummingbird and RankBrain updates made the algorithm more semantic, and by 2026 it's non-negotiable because LLMs fundamentally operate semantically. In practice, semantic SEO means: not a page per keyword but a 'topic cluster' per subject (one core page + multiple supporting articles answering every question about the topic together). Internal links form the fabric.
Example
An SEO agency wants to rank for 'SEO Breda'. Keyword approach: one page repeating 'SEO Breda'. Semantic approach: a core page 'SEO agency Breda', linked from articles about local search optimisation, Breda-area client cases, an E-E-A-T explainer, and a services overview.
Frequently asked questions
Is semantic SEO the same as topical authority?
Almost. Topical authority is the outcome: being recognised as an authority on a topic. Semantic SEO is the method: working with entities, relationships and concepts instead of standalone keywords.
Does keyword research still work in 2026?
Yes, as part of broader topic analysis. Keywords tell you what people type; topics and entities tell you what the subject actually covers. Good SEO combines both.
Related terms
Further reading
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