Glossary
Content Cluster
A content cluster is a group of pages covering one subject comprehensively, linked to a central hub page and to each other, so the site reads as coverage of a topic rather than as isolated articles.
Glossary
A content cluster is a group of pages covering one subject comprehensively, linked to a central hub page and to each other, so the site reads as coverage of a topic rather than as isolated articles.
A hub page introduces the subject and links to every page in the cluster; each cluster page covers one distinct question and links back to the hub and sideways to genuine siblings. That linking is what makes the group legible as a single body of work.

Someone rarely has one question; they have a sequence of them. A cluster answers the sequence, which keeps a reader on the site and gives a retrieval system several relevant passages from one identifiable source.
Pages created because the plan said twelve are the ones that read as thin, compete with each other, and drag down the pages that were genuinely needed.
As big as the subject has genuinely distinct questions. Clusters sized to a target number produce filler pages that compete with the useful ones and dilute the whole group.
It helps considerably. The hub gives the cluster a single strong entry point, distributes internal links to every member, and gives search and AI systems one page that defines what the group covers.
A content cluster is a group of pages covering one subject comprehensively, linked to a central hub page and to each other, so the site reads as coverage of a topic rather than as isolated articles.