What is SEO? Simple Explanation for Beginners in 2026

#Simple definition of SEO

SEO is the art of making your website visible on Google without paying for advertising. The better your SEO, the more free visitors you get.

#SEO vs SEA: what's the difference?

#How does Google work?

To understand SEO, you need to understand how Google finds and ranks websites. It's a 3-step process:

#1. Crawling

#2. Indexing

#3. Ranking

#The 3 pillars of SEO

#Pillar 1: Technical SEO

• Loading speed: your site must load in under 3 seconds
• Mobile-friendly: the site must work perfectly on smartphones
• HTTPS: SSL certificate (padlock in the address bar) is mandatory
• Clear structure: a logical and organised site architecture
• XML Sitemap: a file that lists all your pages for Google

#Pillar 2: Content

• Answer a question: each page must have a clear objective
• Use the right keywords: the terms your customers type into Google
• Be comprehensive: cover the topic in depth (minimum 800 words for a service page)
• Be unique: original content, not copied from elsewhere
• Be up-to-date: Google prefers recent and maintained content

#Pillar 3: Popularity (backlinks)

The more links you have from quality websites, the more Google considers your site reliable and relevant.

• Register on directories (Pages Jaunes, Sortlist, etc.)
• Create quality content that people want to share
• Build partnerships with other businesses
• Write guest articles on other blogs

#Keywords: the foundation of SEO

#What is a keyword?

• "web agency Brussels"
• "how much does a website cost"
• "how to appear on Google"

#Types of keywords

#Where to place your keywords

Strategic places for your keywords:

1. Title tag: the title that appears on Google (60 characters max)
2. Meta description: the text under the title on Google (155 characters max)
3. H1: the main title of the page
4. URL: the page address
5. First paragraph: mention the keyword in the first 100 words
6. Image alt tags: text description of images

#Local SEO: essential for Belgian businesses

#Google Business Profile

Create and optimise your Google Business listing:

• Complete information (address, phone, opening hours)
• Correct business category
• Quality photos
• Customer reviews (aim for 10+ with 4.5 stars)
• Regular posts

#The Local Pack

#How much does SEO cost?

#Doing it yourself

SEO can be done for free if you invest the time. The essential tools are free:

• Google Search Console
• Google Analytics
• Google Business Profile
• PageSpeed Insights

#Hiring a professional

Professional SEO services in Belgium cost:

• Initial SEO audit: €500 – €2,000
• Monthly support: €300 – €1,500/month
• Content writing: €150 – €400 per article

#The most common SEO mistakes

#Mistake 1: Expecting immediate results

#Mistake 2: Keyword stuffing

Repeating the same keyword 50 times in a text is counterproductive. Google penalises "keyword stuffing". Write naturally.

#Mistake 3: Ignoring mobile

#Mistake 4: Not creating new content

A site with 5 static pages will always struggle to rank. A regular blog with quality content is the best SEO lever.

#Mistake 5: Forgetting Google Business Profile

#Where to start? 5-step action plan

1. Create a Google Business Profile (1 hour) — immediate local impact
2. Sign up for Google Search Console (30 min) — submit your sitemap
3. Check the technical basics (1 hour) — HTTPS, speed, mobile
4. Optimise your existing pages (2-3 hours) — titles, descriptions, H1
5. Start creating content (recurring) — minimum 1 article per week

#FAQ

#What's the difference between SEO and referencing?

None. SEO and natural referencing are the same thing. "Referencing" on its own can also mean paid referencing (SEA/Google Ads).

#Does SEO still work in 2026?

Absolutely. SEO evolves (AI, voice search, AEO) but the principle remains the same: sites that offer the best content for users are rewarded by Google.

#How long to reach the first page?

#Is SEO dead with AI (ChatGPT, etc.)?

No. AI changes how people search, but well-ranked websites are also the ones that AI cites as references. SEO adapts and remains relevant.

#I have a small budget, what should I prioritise?

Google Business Profile (free) + optimisation of your existing pages + 1 blog article per week. That's the minimum that can already make a big difference.