Help people find the right page
Imagine a library with no catalogue or clear book titles. Even a useful book would be hard to find. SEO helps search engines discover and understand pages so they can show them to people searching for relevant answers.
For example, a shop might write a clear page explaining how to choose a bicycle helmet. A descriptive page title, helpful headings, and text that answers real questions make the page easier for both readers and search engines to understand. Working links and pages that people can use on different devices matter too.
Search results are earned, not reserved
SEO concerns unpaid, often called organic, search results. Paying for a search advert is a separate activity. A search engine decides which pages to show and in what order; no SEO change guarantees a top position.
Teams may use a content management system to improve pages and analytics to see whether visitors arrive from search. More web traffic is useful only if the visitors find what they need. Write for people first, then make the content easy to discover and navigate.