Topical authority is how much a search engine trusts your site to be a definitive resource on a specific subject. It is earned through a comprehensive, well-structured, interconnected body of content — not a single page. Unlike domain authority, which is a broad site-wide sense of strength influenced by age and backlinks, topical authority is niche-specific and can be built by any site regardless of age or size. Search engines evaluate it through breadth and depth of coverage, logical internal linking (pillar pages and cluster content), semantic relevance and entity relationships, and E-E-A-T trust signals. It matters because demonstrated expertise supports higher rankings, faster indexing, and more SERP-feature visibility, including AI Overviews.
Full guide → Topical Authority: A Foundational Guide
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