SEO stands for search engine optimisation, and it is one of the most over-mystified subjects on the internet. Stripped of jargon, it is simply this: making it easy for a search engine to find your page, understand what it is about, and conclude that it is the best answer to someone’s question.
That is the whole thing. Everything else is detail.
How search engines actually work
Before you can optimise for a search engine, it helps to understand what one is doing. There are three stages, and they are worth knowing because problems tend to occur at a specific stage.
1. Crawling
Search engines run automated programs — crawlers, or bots — that follow links around the web, discovering pages. If no page links to your page, and it is not in your sitemap, a crawler may never find it. Unlinked content is effectively invisible.
2. Indexing
Once a page is crawled, the search engine tries to understand it: what it is about, what it covers, whether it duplicates something else. It then stores it in an enormous database called the index.
Being crawled does not guarantee being indexed. If a page is thin, duplicated, or judged to add nothing new, it can be crawled and then simply left out.
3. Ranking
When someone searches, the engine sifts its index for the pages most likely to satisfy that particular query, and orders them. This ordering is what everyone means by “ranking”, and it is influenced by hundreds of signals.
The useful insight: ranking is not a score your page has. It is a judgement relative to a specific query. The same page can rank first for one phrase and nowhere for another.
The three pillars of SEO
Practically, everything you can do falls into three buckets.
On-page SEO
What is on the page itself: the content, the title, the headings, the structure, the images, the internal links. This is the part you have complete control over, and for most small sites it is where the majority of the wins are.
Technical SEO
Whether search engines can access and process your site properly: speed, mobile usability, crawlability, sitemaps, structured data, and the absence of errors that block indexing. Technical SEO rarely wins you rankings by itself — but a technical problem can absolutely prevent you from ranking at all.
Off-page SEO
Signals from outside your site — overwhelmingly, links from other websites. A link is a vote of confidence, and links from trusted, relevant sites carry substantial weight.
What actually influences rankings
Search engines use a great many signals, but a small number do most of the work.
- Relevance to the query. Does the page genuinely address what was searched? This is table stakes.
- Search intent match. Does the page give the kind of answer the searcher wanted — a how-to, a comparison, a definition, a product?
- Content quality and depth. Does it answer the question fully, or does it circle it?
- Authority and trust. Do other credible sites reference you? Does the site demonstrate real expertise?
- User experience. Can people actually read it on a phone without fighting pop-ups?
- Freshness — sometimes. Critical for news and fast-changing topics, largely irrelevant for timeless ones.
Search intent: the concept most beginners miss
If you learn one thing about SEO, learn this. Every search has an intent behind it, and matching that intent matters more than any technical trick.
Broadly there are four:
- Informational — the person wants to learn something (“what is seo”).
- Navigational — they want a specific site (“google search console login”).
- Commercial — they are researching before buying (“best email marketing tools”).
- Transactional — they are ready to act (“buy standing desk”).
Write a sales page for an informational query and you will not rank, no matter how well optimised it is. The page is simply the wrong type of thing.
The on-page basics that still matter
- Title tag. The clickable headline in search results. Put the main phrase near the front and make it worth clicking.
- Meta description. Not a direct ranking factor, but it heavily influences whether anyone clicks. Treat it as ad copy.
- One H1 per page, describing what the page is about, with H2s and H3s structuring the content logically beneath it.
- Readable URLs.
/what-is-seo/beats/p=4471. - Image alt text. Describe the image honestly. It helps accessibility and image search alike.
- Internal links to related pages, with descriptive anchor text.
What to ignore
A great deal of SEO folklore survives long past its usefulness.
- Keyword density. There is no magic percentage. Write naturally; mention the topic because you are discussing it.
- Meta keywords tag. Ignored by every major search engine for well over a decade.
- Submitting to hundreds of directories. This has been useless — and occasionally harmful — for years.
- Buying links. A genuine risk of penalty, and a poor investment even when it works.
- Chasing every algorithm rumour. Most of what gets breathlessly reported is noise.
How long does SEO take?
Longer than you want. For a new site, expect to see meaningful movement in three to six months, and real traction closer to a year of consistent publishing.
This is not a sign that it is not working. Search engines are cautious about new sites for good reason, and trust is accumulated rather than granted. The people who succeed at SEO are, overwhelmingly, the ones who were still publishing at month nine.
A sensible starting checklist
- Install an analytics tool and connect Google Search Console. You cannot improve what you cannot see.
- Make sure your pages are actually indexed.
- Pick one narrow topic and write the best available guide to a specific question within it.
- Match the format of what already ranks.
- Link it to your other relevant pages.
- Repeat, weekly, for six months.
SEO is not a trick you apply to a page. It is the accumulated result of consistently being the most useful answer available.
Frequently asked questions about SEO
Can I do SEO myself, or do I need to hire someone?
For a small content site, you can absolutely do it yourself, and you probably should. The fundamentals — matching search intent, writing genuinely useful pages, structuring them clearly, and linking them together — require judgement about your subject rather than technical specialism. Agencies become worth the money at scale, or when the technical complexity of a large site genuinely exceeds what one person can hold in their head.
Is SEO dead now that AI answers questions directly?
Search behaviour is changing, but the underlying dynamic is not. Whatever surfaces answers — a ranked list of links or a generated summary — still needs sources it can trust, and it still rewards content that genuinely answers a question better than the alternatives. What is dying is thin content that added nothing in the first place. That was always living on borrowed time.
How many keywords should one page target?
One primary intent, and as many related phrasings as naturally occur while covering it properly. Do not build separate thin pages for “email list building” and “how to build an email list” — they are the same question, and splitting them means two weak pages competing with each other instead of one strong one.
Does publishing more often improve rankings?
Not by itself. Frequency helps only insofar as it produces more genuinely useful pages. Ten excellent articles will comfortably outperform a hundred thin ones — and thin content can actively drag down the pages you care about, by diluting what your site appears to be an authority on.