What is Topic Cluster?
An SEO content architecture that organizes pages around a central topic with a pillar page linked to multiple related subtopic pages.
Topic Cluster Explained
A topic cluster is a content organization strategy where a central pillar page covers a broad topic comprehensively, and multiple cluster pages explore specific subtopics in depth. All cluster pages link to the pillar, and the pillar links to all clusters, creating a tight internal linking network. This architecture helps search engines understand the semantic relationship between pages and recognize topical authority. Topic clusters replaced the old approach of creating isolated pages targeting individual keywords. By demonstrating comprehensive coverage of a topic area, clusters can lift rankings for all pages in the group, not just the pillar.
Frequently Asked Questions
How do topic clusters improve SEO?
They demonstrate topical authority by showing comprehensive coverage. Internal links distribute page authority throughout the cluster. Search engines understand semantic relationships between pages, boosting rankings for the entire topic area rather than isolated pages.
How do you choose topics for a cluster?
Start with your core business topics. Use keyword research to identify the pillar topic (high-volume, broad) and cluster subtopics (lower-volume, specific). Ensure each cluster page targets a unique keyword to avoid cannibalization. Map the linking structure before creating content.
How many cluster pages does a topic cluster need?
Start with 5-8 cluster pages per pillar. Expand as you identify additional subtopics with search demand. There is no upper limit, but each cluster page must offer unique value and target a distinct keyword. Quality and relevance matter more than quantity.
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