What Is SEO? Search Engine Optimisation Explained in Plain English
DICTIONARY · SEO

What Is SEO?

SEO · search engine optimisation, is the work of earning visibility in search results without paying for the click.

In plain English

Search engines try to answer questions. SEO is the practice of making sure that when someone asks a question your business can answer, your page is one of the ones considered, and is clearly the most useful of the options.

That breaks into three kinds of work: making pages readable by machines, making them genuinely useful to people, and giving search engines reasons to believe you're a credible source.

A real example

A dentist in one suburb doesn't need to rank for "dentist". They need to be the obvious answer for "emergency dentist open Sunday" plus the name of their area, a search with far fewer people behind it and far more intent.

The page that wins it usually isn't the prettiest. It's the one that says the opening hours, the address, what an emergency appointment costs, and how to book, in the first screen.

How it works

1. Crawling
A bot follows links and requests your pages. If it can't reach a page, nothing else matters.
2. Indexing
The page is stored and understood: what it's about, what it's for, whether it duplicates something else.
3. Ranking
For a given query, candidate pages are ordered by relevance, quality and credibility signals.
4. Presentation
Results are shown as links, snippets, maps or AI summaries, which changes how much traffic a rank is worth.

Why it matters

Search traffic is intent-led and it doesn't stop when the budget does. A page that answers a buying question well can bring in enquiries for years, which makes SEO one of the few marketing investments that compounds.

Common mistakes

×Chasing high-volume keywords with no commercial intent behind them.
×Publishing several thin pages about the same thing, which then compete with each other.
×Redesigning a site without carrying URLs, titles and internal links across.
×Treating SEO as a one-off project rather than a maintained part of the site.
×Buying links, then wondering why nothing recovers.

FAQs

Is SEO dead now that AI answers questions?

No, but the prize is shifting. Being the source an AI answer draws on requires the same things: clear structure, real expertise and a site that's easy to read.

How much does SEO cost?

It depends on the size of the site and whether you or someone else does the work. The expensive version is doing it twice because the first attempt had no plan.

What should I do first?

Set up Search Console, list the questions your customers ask before buying, and check whether you have one good page for each. That exercise alone finds most of the work.

WRITTEN BY TARIQ SALLAM
Marketing Consultant. Entrepreneur. Content Creator.

I'm a marketing consultant, entrepreneur and content creator. I help businesses grow through practical marketing, websites, SEO, content and AI.

More About Tariq →