Topical authority
Topical authority is a site’s earned status as a default source for a subject, evaluated across three factors: the depth and completeness of its topic coverage, the accumulated performance history of its pages, and how cheaply engines can retrieve and parse its content. It is a reputation a site accrues, not a metric it can set.
Why topical authority matters for an existing site
Topical authority isn’t a vibe you radiate. It’s a formula with three variables, and once you see it that way you stop chasing individual keywords and start filling coverage gaps:
Topical Authority = (Historical Data × Topical Coverage) ÷ Cost of RetrievalThe corollary is the one people ignore: a pillar published on its own is a press release, not an authority signal. Coverage is a multiplier, and one page multiplied by nothing is nothing — which is why you launch 20 pages same-day instead of dribbling them out over five months while the algorithm shrugs. Of the three variables, history is the only one you can’t rush; it accrues as pages age and perform. The other two are on the table right now: publish the cluster all at once, and keep rendering, schema, and bot access clean so retrieval stays cheap. Earn the history slowly. Bring the coverage all at once.
Related: Information gain · Crawl budget Read up: Topical Authority for Existing Sites · The 90-Minute Website Marketing Audit · How to Market a Website in 2026