A content cluster (also called a topic cluster or hub and spoke model) is a content architecture strategy where a single comprehensive pillar page covers a broad topic, and multiple cluster pages each address a specific subtopic in depth. All cluster pages link back to the pillar, and the pillar links out to each cluster.
Structure of a Content Cluster
- Pillar page — a long-form, comprehensive overview of a broad topic (e.g. “The Complete Guide to SEO Auditing”). Targets a high-volume, broad keyword.
- Cluster pages — deeper dives into specific subtopics (e.g. “How to Audit Page Speed”, “Technical SEO Audit Checklist”, “SEO Audit Tools Compared”). Target long-tail, specific keywords.
- Internal links — the connective tissue that signals to Google how the content relates and reinforces topical authority.
Why Content Clusters Work
Search engines interpret a dense network of internally linked, semantically related content as evidence that a site is an authoritative source on a subject. Each individual cluster page gains authority from the pillar, and the pillar gains relevance signals from the clusters.
Building Your First Cluster
- Choose a core topic relevant to your business and audience
- Map out 8–15 subtopics using keyword research and competitor analysis
- Write or update the pillar page to cover all subtopics at a high level
- Create detailed cluster articles for each subtopic
- Interlink everything consistently