Technical SEO
Definition
Technical SEO covers the foundations that let search engines find, understand and serve your website: structure, tags, speed, sitemap, structured data.Search visibility has three pillars: content (what you publish), authority (who cites you) and technology (what your site lets engines do). Technical SEO is that third pillar: invisible to your visitors, decisive for your visibility.
It includes: clean, editable title tags and meta descriptions, a correct semantic structure (heading hierarchy, clean HTML), a healthy XML sitemap and robots.txt, structured data (schema.org) describing your company and your content to the engines, clean addresses, redirect management, and performance measured by the Core Web Vitals.
The key point: technical SEO is built when the site is designed, not after. Retrofitting these foundations onto a badly built site costs more than building them in from the start. That is why "SEO foundations are in the process" with us, not sold as an option.
Let us be honest about what it guarantees: sound technical foundations make ranking possible, they do not promise it. Ranking also depends on content, competition and history. Anyone who guarantees you the first page is lying.
To see these foundations at work during a site change, read our method for a migration without losing rankings. And to see what these foundations are worth beyond Google (Bing, national engines, AI assistants), read which search engines matter in 2026.
Three free checks in five minutes: yourdomain.be/sitemap.xml exists, yourdomain.be/robots.txt blocks nothing important, and PageSpeed Insights does not show red on mobile.
Frequently asked questions
No: it makes ranking possible, content and reputation build it. A technically perfect site without useful content does not rank; excellent content on a broken site does not either.
Three free checks: yourdomain.be/sitemap.xml responds, the search site:yourdomain.be returns your pages, and PageSpeed Insights does not go red on mobile. A serious doubt is settled in Search Console.