TECHNICAL SEO · SEO GLOSSARY
SEO Siloing
An internal linking and site architecture strategy that groups related content into isolated topic clusters (silos), with strong internal linking within each silo and minimal cross-silo linking — intended to concentrate topical relevance signals on target keyword groups.
Definition
SEO siloing is a site architecture approach that organises content into thematic clusters (silos), connects pages within each silo heavily through internal links, and limits or controls links between silos. The theory: by concentrating internal link equity within a topic cluster and reducing dilution across unrelated topics, each silo\'s pages accumulate stronger topical relevance signals for their target keyword group. A standard silo structure: a top-level "silo root" page targeting the primary keyword category (e.g., /seo-tools/) linked from navigation, with subordinate "silo pages" targeting more specific queries (e.g., /seo-tools/rank-tracking/, /seo-tools/technical-audit/) linked from the silo root and from each other. Cross-silo links are either avoided or controlled to only flow through high-authority root pages. SEO siloing originated from work by Bruce Clay in the early 2000s and has been debated extensively in the SEO community — proponents argue it creates measurable topical relevance improvements; critics argue modern internal linking best practice (contextual links based on topic relevance) achieves the same effect without the artificial constraint of strict silo isolation.
Why it matters for SEO
Silo architecture is an influential (if contested) framework for planning internal linking strategy. Understanding it matters for evaluating site architecture recommendations and for diagnosing whether a site\'s internal link structure is concentrating or diluting topical relevance signals. Modern SEO increasingly favours topic cluster models (pillar + cluster content) over strict silos, but the underlying principle — that internally linking topically related pages strengthens each page\'s relevance for that topic — is well-established.
How DeepSEOAnalysis checks this
DeepSEOAnalysis checks internal linking structure on audited pages: the presence and relevance of internal links from the audited page, orphan page detection (pages with few or no internal links pointing to them), and anchor text quality of internal links — signals that inform whether a page benefits from or is isolated by the site\'s link architecture.
GLOSSARY
Related terms
links
Internal Linking
Links between pages on the same domain that distribute PageRank, establish site hierarchy, and guide crawlers to important content.
Read definition →links
Topical Authority
A site\'s perceived depth of expertise in a subject area, built by covering a topic comprehensively rather than by accumulating generic backlinks.
Read definition →links
Pillar Page
A comprehensive hub page on a broad topic that links to and receives links from cluster pages covering specific subtopics — the foundation of a content cluster strategy.
Read definition →onpage
Hub and Spoke (Content Architecture)
Hub and spoke is a content architecture model where a central "hub" page covers a broad topic comprehensively and links to multiple "spoke" pages that address specific subtopics in depth. Each spoke links back to the hub. This internal linking structure builds topical authority by signalling comprehensive topic coverage to Google and concentrating link equity on the hub as the authoritative entry point.
Read definition →onpage
Topic Cluster
A content architecture model where a broad pillar page links to multiple cluster pages covering specific subtopics — building topical authority by demonstrating comprehensive coverage of a subject.
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