Technical Definition
Topic clusters are content architecture organized around pillar pages and supporting cluster content. The pillar page covers a broad topic comprehensively; cluster pages cover specific subtopics and link back to the pillar. Demonstrates topical authority, improves internal linking, and helps search engines understand content relationships. Part of modern semantic SEO strategy.
Simple Explanation (ELI13)
Topic clusters are a way to organize your content. You have one main page (pillar) about a big topic, and lots of smaller pages about related subtopics that all link to the main page. It shows Google you really know the topic and helps visitors find related information. It's like a book with chapters.
Related Terms
Pillar Page, Content Architecture, Internal Linking, Topical Authority
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