A group of interlinked pages covering a subject in depth, organised around a central pillar page.
ID
SS-DF-070
Confidence
High · 87
Evidence
Strong
Updated
2026-07-08
Definition
A group of interlinked pages covering a subject in depth, organised around a central pillar page.
A topic cluster is a content model where a broad pillar page links to and from many focused cluster pages that each address a specific subtopic. This structure signals topical authority to search engines, spreads internal link equity, and helps both crawlers and AI systems understand the full scope of a site's expertise. Clusters reduce cannibalisation by giving each query a clear home, and they map naturally onto the many questions people ask AI assistants around a theme.