Topic clusters and topical authority

A single page rarely covers everything a person wants to know about a subject. A topic cluster is a set of pages that together cover a subject thoroughly: one hub page with the overview, and supporting pages that each go deep on one part.

Structure

Hub: Nešiojamų kompiuterių remontas          (/paslaugos/nesiojamu-kompiuteriu-remontas/)
├── Ekrano keitimas: kaina ir trukmė          (service subpage)
├── Baterijos keitimas                        (service subpage)
├── Kompiuteris neįsijungia: priežastys       (guide)
├── Kompiuteris kaista ir išsijungia          (guide)
└── Taisyti ar pirkti naują?                  (comparison)

• The hub gives the overview and links to every supporting page.
• Each supporting page answers one intent in depth and links back to the hub, and to closely related pages.
• Anchor text describes the target page, as in the links lesson.

What Google has actually said

Why clusters help regardless

Even without any special ranking effect, clusters:

• Give readers a clear path from general to specific, and on to the commercial page.
• Prevent several pages from competing for one intent, because each page has its own job.
• Spread internal links logically, so important pages are well linked.
• Make gaps obvious: a hub with no page on a common question shows you what to write next.

Stay within your expertise

A cluster should grow from what the business really knows. Google lists entering a niche without real expertise, mainly for search traffic, as a warning sign. A repair shop's cluster on laptop faults is credible. The same shop writing about cryptocurrency is not.