Topic Authority

Topic authority (or topical authority) is the algorithmic measurement of how deeply and comprehensively a website covers a specific subject area, establishing it as the definitive, trusted resource in the eyes of search engines. Google no longer ranks individual pages in isolation; it evaluates the entire domain’s expertise. If a brand new website publishes a single, brilliant article on “Heart Surgery,” it will not rank because the domain lacks topical authority in medicine. Building topic authority requires executing a flawless hub, and-spoke architecture, publishing dozens of highly interconnected, exhaustive articles that cover every conceivable subtopic and semantic entity within that niche.

Topic Authority Simplified

Topic authority is how much Google trusts you as an expert on a specific subject. You can’t just write one good article about a topic and expect to rank. You have to write twenty massive, detailed articles covering every single angle of that topic before Google will finally trust you.