SEO
Content Cluster / Topic Cluster
Quick definition
A content cluster (or topic cluster) is a group of interlinked articles built around a central pillar page covering a broad topic in depth.
The cluster model uses a pillar page (broad overview) and supporting cluster pages (specific subtopics), all interlinked. It signals topical authority to search engines.
Why Content Cluster / Topic Cluster matters
Topic clusters tend to outperform isolated long-form posts because they capture more long-tail traffic, distribute internal authority better, and build coherent topical depth.
How Content Cluster / Topic Cluster works in practice
Map clusters before writing: list one pillar topic, 8–20 subtopic articles, and the internal-linking pattern that will connect them. Then execute over weeks or months.
Best practices
- Plan the full cluster before publishing the first article.
- Link every cluster page back to the pillar (and vice versa).
- Use consistent terminology across the cluster.
- Refresh the pillar annually.
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Related terms
Pillar Page
A pillar page is a long-form, comprehensive resource covering a broad topic, designed to rank for high-value head terms and centralize topical authority.
Topical Authority
Topical authority is a site's recognized expertise on a specific subject, built through deep, interlinked content coverage and relevant backlinks.
Internal Link
An internal link is a hyperlink from one page on your website to another page on the same domain.
SILO Structure
SILO structure is an information architecture approach that organizes a site into tightly themed sections (silos), with internal links staying primarily within each silo.
E-E-A-T
E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is Google's framework for evaluating content quality, especially for YMYL topics.
Content Gap Analysis
Content gap analysis is the process of identifying keywords or topics where competitors rank but you don't — surfacing high-leverage content opportunities.