SEO (search engine optimisation) is the work of making sure your website appears on Google and other search systems for the questions your customers type in, without you paying for adverts. It rests on three pillars: technology that Google can read, content that answers questions better than other pages, and trust built through links, reviews and clear company details. Since Google started showing AI overviews, that same work also decides whether your company gets mentioned in AI answers.
SEO stands for Search Engine Optimization. It covers everything that helps a website appear in the unpaid search results when someone searches for a topic, a service or a provider. This page explains it in ten minutes for business owners with no prior knowledge: how Google works, what SEO is based on, what changed in 2026 and which myths you can safely forget.
How Google works: three steps
Google describes its own process in its documentation in three steps.
- Crawling. A program called the Googlebot visits websites and follows links from page to page. Whatever it can't reach doesn't exist for Google.
- Indexing. Google reads every page it finds, understands the text, images and structure, and stores it in a huge directory called the index.
- Ranking and serving results. For every search, Google picks the pages from the index that best match the question and ranks them using hundreds of signals.
SEO works on all three steps: the page must be reachable, clearly structured, and a better match for the question than other pages.
The three pillars
| Pillar | The question behind it | Examples | Who does this |
|---|---|---|---|
| Technology | Can Google read the page? | Load time, mobile display, clean URLs, sitemap, no error pages | Web agency or developer, once and whenever changes are made |
| Content | Does the page answer the question better than others? | One page per service, blog posts answering customer questions, clear titles | You, or someone who knows your business, on an ongoing basis |
| Trust | Is there evidence the company is genuine and competent? | Consistent address everywhere, Google reviews, links from other websites, an about page with real people | You, on an ongoing basis |
Most SME websites don't fail because of the technology, but because of what's missing in the middle: they have a homepage, a services overview and a contact page, but not a single page that answers a specific customer question. SEO for SMEs describes which ten measures make the biggest difference for small businesses.
What's different in 2026
For many searches, Google now shows an AI overview above the classic results: a summarised answer with links to its sources. On top of that, services such as ChatGPT and Perplexity now search the web themselves when asked about providers, and name companies directly.
This changes less about the work than it seems. Google states in its documentation on AI features that no special measures are needed for this; the fundamentals of search engine optimisation still apply. What's shifting is the format: pages that answer a question clearly in the first few sentences are more likely to be cited than pages that circle the topic for a long time. What the AI overview specifically means for SME websites is explained under Google AI Overviews for SMEs. The free AI check shows in about a minute whether your website is found by AI services.
What SEO isn't
- Not adverts. Paid placements on Google are called SEA or Google Ads. SEO is the unpaid side.
- Not a one-off project. You can have a website "optimised" once, but competitors keep writing, Google keeps changing, and content ages. SEO is more of a habit than a job you tick off.
- Not a bag of tricks. What used to work, such as hidden text, bought links or pages stuffed with search terms, is now covered by Google's spam policies and leads to penalties.
Six myths you can forget
- "You have to repeat the search term as often as possible." Google calls this keyword stuffing and lists it as a violation in its spam policies. Once in the title, once in the first paragraph, then write normally.
- "SEO is done in two weeks." Based on experience, it takes six to eight weeks before you see the first movement. More on this under How long does SEO take?.
- "Meta keywords in the source code matter." Google documented years ago that it doesn't use this field for ranking.
- "Google penalises AI-written text." Google judges content by its usefulness, not by how it was created. Unchecked mass content is the problem, not the tool. Details under Does Google penalise AI text?.
- "The more pages, the better." Twenty thin pages on the same topic compete with each other. One good page per question beats them all.
- "Position 1 can be guaranteed." Google itself states that no one can guarantee a ranking. Anyone who promises it anyway is selling something other than SEO.
What a business owner should take from this
If you only take away three things: first, Google needs to be able to read your website, an agency can check this in an hour. Second, every service and every common customer question needs its own page with a clear title, that is work no one can think through for you. Third, your company details need to match everywhere, and reviews need looking after. The page Doing SEO yourself sets out what you can handle yourself and what is better left to someone else. The short definition for a quick look is in the glossary under SEO.
Frequently asked questions
What is the difference between SEO and Google Ads?
Google Ads are paid adverts that appear above and alongside the search results and only show as long as you pay. SEO ensures your pages appear in the unpaid results. SEO takes longer to work but keeps working once the effort stops, adverts work instantly and stop instantly.
Can I do SEO for my company myself?
A large part, yes: business profile, page titles, content and reading the Search Console. Technical work such as load time, redirects when moving domains, and structured data are better delegated by most business owners. What matters more than skill is consistency.
How long does it take for SEO to work?
Based on the experience figures given on this website, rankings start to shift after six to eight weeks, and a noticeable rise in enquiries usually comes from the fourth month onwards. This depends on industry, competition and starting point. Anyone promising results after two weeks is promising too much.
Does SEO even make sense for a small local business?
Especially there. Local searches like "joinery Weinfelden" or "physiotherapy near me" have little competition and clear buying intent. A well-kept business profile, a page per service with a local reference, and a few posts on customer questions are often enough to become visible.