Search engines infer expertise from coverage: a site with thirty coherent, interlinked pages about prompt security reads as an authority on prompt security in a way a single brilliant page cannot signal. Authority is judged per topic, not per domain — a small site can own a narrow subject outright. This is the logic behind the pillar-and-cluster pattern: one page covering the breadth, surrounded by pages covering each piece of it, all cross-linked.
The consequence for planning is depth over sprawl. Ten pages that complete a subject outrank thirty that each touch a different one. It is also the honest argument for glossaries and written-up experience: covering a topic thoroughly is what an expert would do anyway, and the site ends up shaped like the knowledge it claims.
Related terms
Internal linking
Links between your own pages — how authority flows to the pages that need it and how crawlers and readers find depth.
SEO
Search engine optimization — making pages findable, indexable and worth ranking: technical health plus content people actually want.
E-E-A-T
Experience, Expertise, Authoritativeness, Trustworthiness — the quality lens Google's human raters apply, with Trust weighted heaviest.
Keyword research
Finding out which words people actually type when they need what you sell — the input to every content decision.
The bench this belongs to
Web performanceA rebuild that loads on a phone on mobile data, in the country your customers are actually in. Core Web Vitals are the measurement, revenue is the point.
