Site Architecture for SEO: Silos & Topic Clusters (2025)
Why Architecture Matters
Clear architecture helps users and crawlers discover, understand, and value content relationships across pillars and clusters.
A structured site distributes link equity effectively and builds topical authority faster than isolated pages.
Siloing & Topic Clusters
- Use a pillar page as the canonical hub for a broad topic.
- Create cluster pages that target subtopics and questions in-depth.
- Cross-link semantically related clusters to reflect topical breadth.
Internal Linking Strategy
- Link cluster ➝ pillar (and pillar ➝ key clusters) with descriptive anchors.
- Add contextual links inside paragraphs, not just “related” boxes.
- Avoid generic anchors like “click here”; prefer intent-led, concise text.
Click Depth & Crawlability
- Keep important content within 3–4 clicks from the homepage.
- Use hub pages and category indices to surface deep content.
- Fix orphan pages by adding in-body, contextual links.
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