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What is SEO? Explained in plain English (2026)

As a business owner, you hear it everywhere: "You need to do something with SEO." But what is SEO, really? And what does it mean for you in practice? In this guide I explain it step by step, without jargon. By the end, you will know exactly what SEO means, why it matters and how to get started with it.

What is SEO? The definition in plain words

SEO stands for Search Engine Optimization (in Dutch: zoekmachineoptimalisatie). It covers everything you do to make your website appear higher in the search results of Google, Bing and other search engines, without paying for it.

Say someone searches Google for "plumber Arnhem". That person rarely scrolls past the first few results. If your website is on that first page, it attracts visitors. If your site is on page three or four, almost nobody sees you. SEO is how you climb from page three to page one.

What makes SEO so appealing: you do not pay per click. Unlike Google Ads, where you pay for every visitor, organic visitors are free. Well-executed SEO keeps delivering returns for months or even years, as long as you maintain it properly.

In short: SEO is a long-term investment in how easily people can find your business. That is what I do as an SEO agency in Arnhem, for SMB clients across the Netherlands. You can read more about who I am on the about page.

How does Google actually work?

To understand what SEO does, it helps to take a quick look behind the scenes at Google. Google constantly sends so-called "crawlers" out across the internet. This software reads every web page and stores it in a huge index, similar to a library catalog.

When someone types something in, Google searches that index at lightning speed and returns a ranked list. Which pages end up at the top is decided by the algorithm, based on hundreds of signals. The most important ones are:

  • Relevance: does your page match what the searcher wants to know or do?
  • Authority: do other trustworthy websites think you are worth linking to? This is often expressed as domain authority.
  • User experience: does your page load quickly, work well on mobile and have text that is easy to read?

SEO is all about strengthening these signals. That is not something you do in an afternoon, but with a well-thought-out approach you build step by step.

What does SEO involve? The three pillars explained

If you ask what SEO involves, there are three major components. I call them the three pillars. Together, they determine how well your website performs in Google.

1. Technical SEO

This is the foundation. Think of: loading speed, mobile-friendliness, a properly configured sitemap, no duplicate pages and correct internal linking. If the technical basics are not right, good copy and links will not help much. Google simply cannot crawl or understand your site properly.

2. On-page SEO (content and optimization)

On-page SEO is about everything on the page itself: the copy, the titles, the images and the keywords you use. It starts with keyword research: which terms does your target audience type into Google? Then you optimize each page around those keywords. In my on-page SEO checklist you will find all the steps I use for this, from meta titles to internal links.

3. Link building (off-page SEO)

Link building is the process of earning links from other websites to yours. Google sees such a link as a recommendation: "This website has valuable information." The more quality backlinks you earn, the greater your domain's authority and the higher you rank. I put a lot of attention into professional link building, because this is often where the gains are once the content is in good shape. You can read exactly what link building involves in the guide what is link building.

Who is SEO for?

Almost every business that wants to attract customers online benefits from SEO. But how urgent it is depends on the situation.

Local businesses (from handyman services to physical therapists) benefit enormously from local SEO for SMBs. Someone searching for "physical therapist Utrecht" has immediate buying intent. If you are visible there, you win patients from the competitor who relies only on word of mouth. For physical therapy practices, I have a separate guide on SEO for physical therapists.

Online stores can use SEO to attract visitors more cheaply over the long run than with paid ads. Especially for products with high search volume, a strong organic position pays off more in the long term than an ongoing Ads budget.

Service providers and B2B companies earn trust through informative content. Someone who reads your blog article, recognizes your expertise and then gets in touch is already a lot warmer than a cold inbound lead.

Want to know whether and how SEO optimization works for your situation? I am happy to think it through with you, no strings attached.

How does SEO compare to paid advertising?

A question I get a lot: "Do I have to choose between SEO and Google Ads (SEA)?" The short answer: they complement each other, but they work differently.

With Google Ads (SEA) you can be at the top tomorrow. But as soon as you stop paying, that position disappears. In a sense, you are renting visibility. For temporary campaigns or new products, that works fine.

With SEO you build something that belongs to you. It takes more time (on average 3 to 6 months for the first results), but the positions you earn keep paying off after the investment. Strong organic positions also build more trust with searchers: people click on organic results more often than on ads.

In practice, I see that companies that combine SEO and SEA smartly get the best results. Ads for quick conversions, SEO for lasting growth.

SEO as a starting point: how to get started today

Now that you know what SEO is and what it involves, the next step is: where do you start? My advice for business owners who are just getting started:

  1. Keyword research: map out which terms your potential customers type in. Use tools such as Google Search Console or Ubersuggest.
  2. Get the technical basics right: make sure your website loads quickly, is secure (HTTPS) and works well on mobile. That is the foundation everything else rests on.
  3. Write content: create pages and blog posts that match what your target audience is searching for. Write for people, not for algorithms.
  4. Earn links: ask partners, suppliers or local organizations to link to your site. Or bring in a specialist for targeted link building.
  5. Measure and adjust: use Google Analytics and Search Console to see what works. SEO is not a one-off task but an ongoing process.

Sounds like a lot of work? It is, especially if you do it alongside running your business day to day. That is why many business owners choose to outsource their SEO in full or in part. See how I can help with that through my link building services or outsourcing link building. Not sure whether to do it yourself or get help? The choice between a freelancer or agency depends on your situation. Also read the on-page SEO checklist to see which steps you can take yourself today.

FAQ

Frequently asked questions about SEO

The questions business owners often ask before they start with SEO.

What exactly is SEO?+

SEO stands for Search Engine Optimization. It is the set of techniques you use to make your website easier to find in search engines like Google, without paying for ads.

What does SEO stand for?+

SEO stands for Search Engine Optimization. In Dutch, it is called zoekmachineoptimalisatie. The goal is to rank higher in the organic (unpaid) search results of Google and other search engines.

How long does it take for SEO to deliver results?+

SEO is a long-term strategy. You usually see the first visible results after 3 to 6 months. How quickly you rank depends on the competition in your market, the authority of your domain and the quality of your content and link building.

What is the difference between SEO and SEA?+

SEO focuses on organic (free) search results. SEA is paid advertising through Google Ads. With SEA you pay per click, and your positions disappear as soon as you stop paying. With SEO you build lasting visibility that keeps paying off.

Can I do SEO myself or do I need a specialist?+

You can learn and apply the basics yourself, especially for a small website. If you want to grow seriously in a competitive market, it pays to work with an SEO specialist who aligns the technical side, content and link building.

Want to know more about what SEO can do for your business?

I am happy to take a look at your website, no strings attached, and tell you honestly what the opportunities are. No vague sales story, but a clear picture of where you stand now and what there is to gain.