Term
Topic Cluster / Pillar Page
A content architecture built from one broad pillar page and several specific cluster pages, tied together by topic and internal linking.
Topic Cluster / Pillar Page — explained in more detail
The topic-cluster model organizes content around a main theme: a pillar page covers the topic broadly (for a generic, high-volume keyword), and several cluster pages each cover a specific sub-aspect (long-tail keywords). All cluster pages link to the pillar; the pillar links back to the clusters.
Hubspot popularized the model in 2017. The underlying logic is semantic: a site that covers a topic comprehensively and in a structured way signals topical authority — Google tends to rank the pillar better because the cluster ecosystem proves depth.
Example / In practice
Pillar: “SEO fundamentals.” Clusters: “Title Tag,” “Meta Description,” “robots.txt,” “Sitemap,” “Canonical Tag,” “hreflang,” “Internal Linking,” “Backlinks.” Each cluster article links back to the pillar with descriptive anchor text. The pillar embeds natural links to the cluster articles in the relevant sections.
Distinction from similar terms
Content hub is often used synonymously with topic cluster but can be broader (e.g. a resource library with mixed formats). Hub-and-spoke is the same model under another name. Silo describes strict separation of topics by URL structure — topic clusters are more flexible and primarily rely on linking.
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Content Hub
Central overview page for a topic area that bundles many detail articles — a variant of the topic cluster model, often with a stronger focus on navigation and filtering rather than a linear pillar page.
LexikonOptimizing Internal Linking
How internal links distribute link equity, how click depth and anchor text work — and how to deliberately strengthen key target pages.
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