Topic Cluster Architecture is an SEO and content strategy framework that organizes content around a central “pillar” topic and several related subtopics or “cluster” pages. This structure helps search engines better understand the relationship between your content pieces—and improves your site’s authority on the topic.
Each cluster page targets a long-tail keyword and links back to the core pillar page, which covers the main topic more broadly. In turn, the pillar links to each cluster. This internal linking signals content depth and coherence, improving rankings and user navigation.
Example:
A SaaS company creates a pillar page on “Revenue Architecture for SaaS” and publishes cluster pages like “Lead Scoring Models,” “Account-Based Marketing,” and “Sales-Marketing Alignment.” Each links to the pillar and to each other, building a strong SEO foundation.