SEO is everything you do to get found more easily in search engines, without paying for it. The letters stand for Search Engine Optimization, in other words search engine optimisation. It comes down to getting three things right: your technical foundation, your content and your authority. Get that right, and Google understands and trusts your site, showing it to the people searching for what you offer.
What is SEO in one sentence?
SEO is making your website findable in the organic, meaning unpaid, search results. Those spots at the top of Google aren't ads. They're the results you earn by being more relevant and more trustworthy than the rest.
At GRP Digital, we don't see SEO as a trick to outsmart Google, but as building a site the search engine simply can't ignore. That distinction matters, and it runs through this entire article.
How do search engines actually work?
To understand what SEO does, you first need to know how a search engine works. Think of Google as a huge library. Before a book can be found, someone has to discover it, read it, put it on the right shelf and make a card for it. Google does exactly that, only with billions of webpages and in a fraction of a second.
Crawling, indexing and ranking explained
The process consists of three steps:
- Crawling. Google sends a program, the crawler, from link to link across the web to discover pages. If it can't find a way to your page, that page doesn't exist for Google.
- Indexing. The page it finds is read and stored in the index, Google's gigantic card catalogue. Here it tries to understand what your page is about.
- Ranking. When someone searches for something, Google pulls the most relevant pages from the index and puts them in order. That order is the ranking, and that's what it's all about.
SEO acts on all three steps: making sure you get found, that you get understood, and that you earn the trust to stand at the top.
Why SEO isn't a trick
Many people think of SEO as a bag of isolated hacks: repeat a keyword more often, buy some quick links, tweak a meta tag. That doesn't work, or not for long. Google judges the whole picture, not a collection of separate tweaks. A fast page with thin content won't get you there, and neither will a strong article on a site that's slow and badly structured.
We don’t build pages, we build logic.
Giacomo Perticara, founder and SEO strategist at GRP Digital
The three pillars of SEO
Good SEO rests on three foundations. Neglect one, and the whole thing wobbles. They work together: a solid technical foundation makes your content findable, content gives the search engine something to show, and authority tells it you can be trusted.
Technical SEO: can the search engine read your site properly?
Technical SEO makes sure Google can visit and understand your site without obstacles. Think of a logical site structure, good page speed, a sitemap that points the way, working internal links and a site that also performs well on mobile. Without a healthy technical foundation, the rest won't get off the ground, no matter how good your content is.
You don't need to become a tech expert, but the basics have to be right. A technical check is like your car's MOT: you do it periodically, even when nothing seems broken.
Content: do you really answer the question well?
Content is the core. The question isn't how often you mention a keyword, but whether you answer the question behind the search better than the rest. That starts with search intent: what does someone really want to know when they type something in?
Take the word “sneakers”. One person wants to know what sneakers are, another wants to buy them, and a third is looking for a specific brand. The same word three times, three completely different intentions. Good content matches the right intent, and gives a complete, clear answer instead of half of one.
Authority: why trust matters
Google can't feel for itself whether your information is accurate. So it looks at trust signals. The best known are backlinks: links from other websites to yours, which act as recommendations. But brand mentions and a demonstrably knowledgeable author count too.
Google sums this up under E-E-A-T: experience, expertise, authority and trustworthiness. In plain terms: show that someone who knows what they're doing is behind your content, and that others take you seriously.
Technical foundation, content and authority together are also exactly the line between on-page en off-page SEO. On-page is everything you arrange on your own site: your content, your headings, your technical setup. Off-page is everything that happens outside your site and determines your reputation, with backlinks as the main example.
SEO vs SEA: what's the difference?
SEO and SEA are often confused. SEA (Search Engine Advertising) are the paid ads at the top of Google: you pay per click, and the moment you stop paying, you're gone. SEO builds traffic that stays.
Think of it this way: SEA is a tap you turn on and off. Open it, and the traffic flows; close it, and it stops immediately. SEO is a foundation. It takes more time to lay, but you don't rent your spot, you own it. The strongest approach often combines both, but they do something fundamentally different.
Why SEO matters
Most online journeys start at a search engine. If you don't show up there, you simply don't exist for a large part of your potential customers. And unlike ads, SEO attracts people who are actively searching for what you offer at that exact moment: relevant traffic, not an interruption.
The big advantage lies in durability. A position you earn with solid technique, content and authority isn't one you lose to someone who just pumps some money into ads. You build visibility that keeps standing, even when your marketing budget has a rough month.
How do you get started with SEO?
SEO can seem overwhelming, but the order is logical. You don't have to do everything at once, you build it up.
Start with search intent and topics
Before you write a single word, you want to know what questions your target audience is asking and what they mean by them. Understand first, publish after. That way you avoid spending months creating content nobody is waiting for.
Get your technical basics in order
Check that Google can visit your site properly: is it fast, is your sitemap in place, are there no broken links or pages accidentally blocked? This is the foundation the rest rests on.
You want to be taken seriously by the search engine; give it mixed signals, and it backs off.
Giacomo Perticara, founder and SEO strategist at GRP Digital
Build topic logic with internal links
Standalone pages are weaker than a coherent whole. By smartly linking related articles together, you show Google that you genuinely master a topic. A page about SEO that links to your explanations of sitemaps, backlinks and speed tells a complete story. That's topic logic: you're not building standalone pages, you're building a web that reinforces itself.
Is SEO still relevant with AI?
With the rise of AI answers in Google and assistants like ChatGPT, plenty of people wonder whether SEO still makes sense. The answer is: more than ever. Whether someone asks Google or an AI assistant, behind both sits a system that decides which sources get to supply the answer. And it picks those sources based on the same principles: relevance, clarity and trust.
SEO isn't dead. But you will have to use it differently.
Giacomo Perticara, founder and SEO strategist at GRP Digital
SEO, AEO and GEO: how they relate
You increasingly hear the terms AEO (Answer Engine Optimization) and GEO (Generative Engine Optimization). It's tempting to see these as separate, new disciplines, but they aren't. They're layers of SEO, not replacements for it.
SEO is the overarching discipline: making sure you get found. AEO and GEO move with how that findability shifts toward answers and AI summaries. If your SEO foundation is solid, you're also well placed in these newer layers. It doesn't work the other way round.
Common SEO mistakes
The pitfalls are remarkably predictable. Recognise a few of them, and you'll know where your gains are waiting:
- Standalone pages without coherence. Plenty of content, but no structure that helps Google see your authority.
- Thin or duplicate content. Pages that answer the question halfway, or overlap with each other and end up competing for the same position.
- Steering blindly on keywords. Repeating a word ten times doesn't make you more relevant, only harder to read.
- Ignoring technique. A slow or poorly structured site holds back even strong content.
- Buying links for a quick fix. A pile of weak or bought backlinks doesn't help and can actively harm you.
- Publishing AI text without added value. Content that adds nothing falls flat, whether you write it yourself or have it generated.
Frequently asked questions about SEO
What does SEO mean?
SEO stands for Search Engine Optimization, in other words search engine optimisation. It's about making your website more findable in the organic search results.
How does SEO work?
SEO works by improving your technique, content and authority so that search engines understand and trust your page better, and therefore show it higher up.
What are the three pillars of SEO?
Technical foundation, content and authority. Together they determine how well a page can perform in search engines. Miss one, and the whole thing wobbles.
How long does SEO take?
SEO takes time, because Google first has to discover and assess changes. Count on several months for serious movement, and longer in competitive markets.
Can I do SEO myself?
The basics, definitely. A fast site, clear content and a logical structure get you a long way. For competitive markets, it pays to bring in someone who does this every day.
Is SEO still relevant with AI?
Yes. Even in an AI-driven search landscape, good, reliable and logically structured content remains the basis of visibility. AI changes the form, not the foundation.
Conclusion: SEO is building findability that lasts
SEO isn't a collection of isolated tricks, but a way of building: a site that's fast, answers the right questions and earns trust. Technical foundation, content and authority work together in this as one system of logic, relevance and trust.
Get that right, and you get found. Today in Google, tomorrow in the AI assistant running on top of it. And that's exactly the point: you don't build pages, you build logic that keeps working, even as the search landscape changes.
