SEO Term Definition
Content Cluster (Pillar & Cluster Model)
A content cluster is a group of interlinked pages covering a broad topic (pillar page) and all its subtopics (cluster pages), building topical authority and improving internal linking.
Reviewed by Alexander Yarovenko · Updated: 2026-07-03
What is a Content Cluster?
The content cluster model (also called the pillar and cluster or hub and spoke model) is an SEO content strategy where a broad pillar page covers a major topic at a high level, and multiple cluster pages dive deep into specific subtopics — all linked together.
Structure of a Content Cluster
PILLAR PAGE: "Complete Guide to Content Marketing"
├── Cluster: "What is Content Marketing?"
├── Cluster: "Content Marketing Strategy"
├── Cluster: "How to Write a Blog Post"
├── Cluster: "Content Marketing Metrics"
├── Cluster: "B2B Content Marketing"
└── Cluster: "Content Marketing Tools"Why Content Clusters Work
- Builds topical authority — demonstrates comprehensive expertise on a subject
- Improves internal linking — creates a logical link structure that distributes authority
- Targets multiple keywords — pillar targets broad keywords; clusters target long-tail variations
- Reduces keyword cannibalization — clear topical separation between pages
- Better user experience — users can easily navigate to related content
Building a Content Cluster
- Choose a broad topic — something with high search volume but many subtopics
- Create the pillar page — long-form (2,000–5,000 words), covers the topic broadly, links to all clusters
- Identify cluster topics — questions, subtopics, and related keywords the pillar can't cover in depth
- Write cluster pages — each focused on one subtopic, linking back to the pillar
- Add bidirectional links — pillar → clusters and clusters → pillar