LINKS · SEO GLOSSARY

Site Architecture

How a website's pages are organised and linked together — affects crawl efficiency, PageRank distribution, and how clearly topical clusters signal to search engines.

Definition

Site architecture refers to the hierarchical structure of a website and how pages link to each other. Good site architecture is: flat (key pages are reachable in 3 clicks or fewer from the homepage), logical (topically related pages are grouped together and linked within sections), and crawlable (every important page is reachable via HTML links that crawlers can follow). The classic architecture pattern is a hub-and-spoke model: a pillar page (hub) covers a broad topic, and cluster pages (spokes) cover specific subtopics and link back to the pillar. Good architecture concentrates link equity on important pages and helps search engines understand topic relationships.

Why it matters for SEO

Poor site architecture causes two compounding problems. First, crawlers may not discover all pages if the internal link structure is shallow or broken — deep pages (reachable only through many clicks) get crawled infrequently. Second, PageRank flows through internal links: pages buried deep in the architecture accumulate less PageRank than pages linked prominently from the homepage or hub pages. Topical clusters (groups of related content linked together) are also important for demonstrating topical authority to search engines.

How DeepSEOAnalysis checks this

The audit measures click depth for every crawled page (how many links from the homepage), flags pages deeper than 4 clicks as potentially undercrawled, identifies orphan pages (no inbound internal links), and maps internal link distribution to identify pages that receive disproportionately few internal links relative to their content quality. The internal link graph is analysed to surface topical clustering opportunities.