Definition
Siloing is a site architecture strategy that involves organizing content into thematic groups (silos) isolated from each other. Each silo groups pages covering the same theme, connected by internal links, with a pillar (cornerstone) page at the top of the silo. Internal links circulate primarily within the same silo to strengthen topical relevance. This approach helps Google understand the site's structure and each section's expertise. Siloing can be physical (URL structure /seo/technical/cwv) or virtual (through internal linking only).
Key Points
- Organizes content into isolated thematic groups
- Strengthens topical relevance for each section in Google's eyes
- Can be physical (URL structure) or virtual (internal linking)
Practical Examples
SEO site
A site organized in silos: /technical-seo/ (CWV, crawl, indexation), /on-page-seo/ (content, tags, keywords), /link-building/ (backlinks, authority, anchors). Each silo has its pillar page and linked articles.
E-commerce
An e-commerce site organized in silos: /running-shoes/, /trail-shoes/, /hiking-shoes/. Internal links stay primarily within the same thematic silo.
Frequently Asked Questions
No, but strongly recommended for large sites. It helps Google understand thematic structure and strengthens each section's authority. For small sites, coherent internal linking suffices.
Yes, but sparingly. Cross-silo links are acceptable when relevant to the user. The key is that most internal links circulate within the same silo.
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Last updated: 2026-02-07