Content Cluster
A content cluster is a group of related pages — one pillar plus supporting articles — interlinked to build topical authority on a subject.
A content cluster organizes content around a central theme. A broad pillar page covers the topic at a high level, and a set of cluster pages each dive deep into a specific subtopic or question. Every cluster page links up to the pillar and the pillar links back, creating a tight web of relevance. This structure helps search engines see the full scope of your expertise.
Clusters beat publishing random one-off articles because they signal depth and capture the many long-tail queries around a topic. For AI and answer engines, a well-built cluster increases the odds that your site is cited as the authoritative source, since the breadth demonstrates command of the subject. It is the practical engine behind topical authority and a core tactic in modern SEO and GEO.