What this means in practice
Topical authority is best understood as depth and coherence: a site that covers a subject thoroughly and connects its knowledge clearly can serve more of the user journey.
Implementation path
- Choose a meaningful topic boundary instead of trying to cover everything.
- Create a strong pillar page and supporting pages for distinct subtopics and questions.
- Link the cluster deliberately so relationships are obvious.
- Expand when there is a real information gap, not simply because a keyword tool produced another phrase.
What good looks like
A strong implementation makes the intended behavior obvious to a visitor, a crawler, and a machine reader. It has one clear purpose, uses consistent signals, and does not rely on hidden assumptions.