Glossary
Content Cluster
A group of interlinked pages on a single topic — typically a pillar plus spokes — that together establish a domain as authoritative on that topic.
A content cluster is the practical manifestation of topical authority. One pillar article covers the topic broadly; multiple spoke articles drill into specific sub-aspects; every spoke links back to the pillar and to relevant siblings.
How is a content cluster different from a topic cluster?
Same concept, different names. "Topic cluster" emphasizes the conceptual grouping of keywords; "content cluster" emphasizes the page artifacts that result. They're typically used interchangeably.
What's the minimum viable cluster size?
One pillar article + 4 spokes is the smallest credible cluster. Most established sites run pillar + 8–15 spokes per major topic. The goal is comprehensive coverage that leaves few unanswered sub-questions.
Does the cluster need to be on one subdomain?
Yes — keep clusters on a single domain so internal linking flows authority. Splitting across subdomains or domains dilutes the topical signal.
Part of the Cite Hustle GEO glossary — definitions for generative engine optimization and AI search.