Learn a practical topic cluster strategy: choose pillar topics, research clusters, structure internal links, measure SEO impact, and scale across teams.
What is a topic cluster?
A topic cluster is an essential component of effective content marketing. SEO content model that organizes a core subject into one comprehensive pillar page supported by multiple focused cluster pages. It improves topical coverage and internal linking so search engines and readers can navigate depth and breadth efficiently; the pillar summarizes the topic, and clusters answer specific sub-questions. A key consideration is technical alignment: clusters should link to the pillar and to each other, and duplicate or near-duplicate angles should be clearly canonicalized to consolidate signals.
Core components: pillar, clusters, internal linking hub, and canonicalization
- Pillar page: comprehensive, high-level guide that targets a broad topic and links out to subtopics.
- Cluster pages: in-depth articles answering discrete intents, each linking back to the pillar and related clusters.
- Internal linking hub: a logical web of contextual links that surfaces hierarchy and relevance; Google’s link guidelines emphasize crawlable links to help Search understand your structure (Google Search Central).
- Canonicalization: designate one canonical URL for overlapping or duplicate content to consolidate ranking signals and avoid split equity (Google on canonical URLs).
