Topical authority: covering a subject properly instead of chasing keywords

What does topical authority actually mean?

It is the association between your site and a subject, built from the depth, breadth, internal coherence and credibility of your coverage. It is not a metric a search engine publishes, and it is not something you can claim — it is inferred from what you have produced.

• Breadth: the sub-topics a practitioner would expect to see covered.
• Depth: each piece answering its question completely rather than superficially.
• Coherence: internal linking that reflects real relationships between the pieces.
• Consistency: the same terminology and positions across the body of work.
• Credibility: named authors, real experience, cited sources, corroboration elsewhere.

How do you map a topic?

1. 1Write down the questions a beginner, a practitioner and a decision-maker would each ask.
2. 2Look at what already ranks and what the sub-headings of those pages cover.
3. 3Mine People Also Ask, forum threads and your own support and sales conversations.
4. 4Group the questions into sub-topics; each substantial sub-topic becomes a page.
5. 5Identify which sub-topics you have genuine first-hand experience with — those are your strongest pieces.
6. 6Be honest about the gaps. A cluster with three excellent pages beats one with twelve where nine are filler.

Topic: Web performance
├── Core Web Vitals explained          (pillar)
├── Improving LCP                      (depth)
├── Improving INP                      (depth)
├── Fixing CLS                         (depth)
├── Reducing bundle size               (cause)
├── Font optimisation                  (cause)
├── Image formats                      (cause)
├── Third-party scripts                (cause)
├── Performance budgets                (process)
└── Lab vs field data                  (measurement)

How much do you need to publish?

Enough to cover the topic's real sub-areas — usually eight to fifteen substantial pieces for a defined subject, not a fixed quota.

The number matters less than the completeness. If a reader can arrive knowing nothing and leave able to act, the coverage is sufficient. If there is an obvious question your cluster does not address, it is not — regardless of the article count.

What makes a cluster credible rather than assembled?

1. 1First-hand specifics: what happened when you did this, with numbers.
2. 2Positions: recommending one approach over another and explaining the trade-off.
3. 3Honest limitations: saying when a technique does not apply is a strong credibility signal.
4. 4Original artifacts: diagrams, benchmarks, checklists, tools others reference.
5. 5Named authors with real, verifiable expertise in the subject.
6. 6Maintenance: updating pieces when the underlying reality changes.

How do you know it is working?

• New pages in the cluster start ranking faster than your first ones did.
• You rank for terms you never explicitly targeted within the topic.
• AI systems cite you for questions in that subject area.
• The cluster's pages appear together for related queries.
• People reference your pieces without being asked to.

The timeline is months, not weeks. Topical authority is the slowest-compounding and longest-lasting investment in content — which is precisely why most sites abandon it before it starts working.