GLOSSARY TERM
What is Topic Cluster?
Definition
A content organization model where one comprehensive "pillar" page covers a broad topic and links to many narrower "cluster" pages on subtopics, with reciprocal internal links.
Why it Matters for AI Search
Topic clusters demonstrate topical authority to search engines and AI engines. A single pillar page outranks scattered standalone posts on the same topic, even if individual posts are well-written. Building one well-organized cluster beats publishing 50 unconnected posts.
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