What is SEO and how does it work?

What is SEO?

SEO is the work you do so that search engines can find your pages, understand them and show them to people who are looking for what you offer. Google describes search engine optimization as helping search engines understand your content and helping users find your site, and it publishes its own SEO Starter Guide for anyone getting started.

SEO vs paid search in plain terms

People often mix up organic results and paid ads. Both can appear on the same results page, but they work very differently.

Google also states that paying for ads does not influence organic rankings. You cannot buy your way into the organic results, which is exactly why they tend to earn trust.

Why SEO matters

Search is where many people research a problem before they contact anyone, and an organic result gives you the chance to be the first helpful answer they see. That makes SEO less about chasing traffic and more about being present at the moment someone is deciding who to trust. That is the thinking behind our AI SEO service, which aims to make you the answer people see in Google and in AI tools.

SEO vs SEM: what is the difference?

SEM, or search engine marketing, is the wider term for earning visibility in search through any method. It usually covers both SEO (organic work) and paid search ads. In everyday use, people say SEO when they mean earning rankings without paying per click, and SEM or PPC when they mean buying ad placements. A healthy search strategy often uses SEO as the long-term foundation and paid search where speed matters.

How search engines work: crawling, indexing and ranking

Every search result you see is the end of a three-stage process. If you understand the stages, you can usually work out why a page is not showing up.

No single factor controls ranking, and nobody outside the search engine can give you the exact formula. What you can control is the quality of what you publish and how well the page matches what the searcher wants.

The three pillars of SEO

SEO can look like a long checklist, but nearly every task falls into one of three groups.

What are backlinks, in simple words?

A backlink is a link to your website from another website. Think of it like a recommendation: when a respected site links to you, it signals that your page is worth reading. Relevance and trust matter far more than raw numbers, so a few links from credible, related sites usually beat a pile of links from unrelated or low-quality ones. Buying or swapping links at scale to manipulate rankings goes against Google spam policies and can backfire.

Content sits at the center

All three pillars serve one goal: helping people get a good answer. Technical SEO lets your pages be found, on-page SEO makes them understandable, and off-page signals help show they can be trusted. But the page itself still has to be worth reading. Before you write anything, ask what the searcher really wants to know, what they will do next, and what would make your page the most useful result they could land on.

SEO looks different by business type

SEO vs AEO vs GEO: how AI search changes the game

Search is no longer just ten blue links. People now get answers from AI features inside Google, such as AI Overviews, and from assistants like ChatGPT and Perplexity. That has produced two newer terms. Putting all three to work together is what we call AI SEO.

What Google says about AI features

Google guidance on AI features in Search is reassuring and a little surprising. It states that no special optimization is required to appear in them. Your page needs to be indexed and eligible to be shown with a snippet, and the same best practices that help your pages in regular search apply. Google also says you do not need special schema markup or new AI-specific text files to qualify.

What changes in practice

If the foundations are the same, what is different? The emphasis. AI answers tend to reward pages that state things plainly, define terms early, back claims with facts and cover a topic completely. If you want help applying this to your own pages, our AI SEO specialists can review them against these points.

Is SEO dead because of AI?

No. SEO is changing shape, not disappearing. AI features still rely on content that search engines have crawled, indexed and judged useful, which is the same pipeline described above. What is changing is where visibility shows up: not only in blue links, but also inside AI answers and citations. That is why many teams now treat SEO, AEO and GEO as one connected effort. If you want to see how this works in practice, our AI SEO service covers both classic rankings and visibility in AI answers.

How to start doing SEO: a practical process

If you are new, do not try to learn everything at once. This six-step order works for most sites.

1. 1
   Define the goal and the audience

   Decide what a successful visit looks like, such as a booking, a quote request or a signup, and who you want to reach. SEO without a goal ends up measuring traffic that does not matter.

2. 2
   Research what people search for

   List the questions and phrases your audience uses. Group them by intent: people wanting to learn, compare or buy. Reading the questions people ask in forums and Q&A sites helps too.

3. 3
   Fix the technical basics

   Make sure the site loads quickly, works on mobile, uses HTTPS, has a sitemap and does not accidentally block search engines. Use Google Search Console to see crawl and indexing problems.

4. 4
   Create or improve your content

   Write one page per clear topic, answer the question near the top, and add depth that competitors skip. Improving an existing page that almost ranks is often faster than starting from scratch.

5. 5
   Connect your pages with internal links

   Link related pages to each other using descriptive anchor text. It helps crawlers discover pages and helps readers move toward the next useful step.

6. 6
   Earn trust and measure results

   Build reputation through genuinely useful content, relevant mentions and good reviews. Then track impressions, clicks, rankings and conversions, and adjust based on what the data shows.

How long does SEO take?

Google says that changes to a site can take anywhere from a few hours to several months to show up in search, and that it is sensible to wait a few weeks before judging whether a change worked. Expect SEO to be a months-long investment rather than an overnight result. Competition, the age of your site and the quality of your content all affect the pace, so any promise of guaranteed first-page rankings in days should be treated with caution.

White hat vs black hat SEO

Things Google says not to obsess over

Beginners often spend time on details that do not move the needle. According to Google guidance, you do not need to worry about the meta keywords tag, which it does not use, or about keyword stuffing, which does not help. Google also has no preferred minimum or maximum content length, and it does not require a particular number or order of headings. Write as long as the topic needs, and structure the page so people can follow it.

Common beginner mistakes

Frequently asked questions about SEO