Technical SEO and Core Web Vitals

Visibility comes from architecture, not keywords

In modern search engine algorithms, the focus has shifted from keyword optimisation towards user experience. Technical SEO is today an essential component of software architecture. A fast, accessible, and technically clean website is the prerequisite for visibility.

Google uses Core Web Vitals as measurable criteria for performance. Core Web Vitals can contribute to search success but are one factor among several in page quality and do not replace relevant content.

Anti-Patterns: The Invisible Brake

A lot of money is invested in content marketing, while the technical foundation of the website (high loading times, poor mobile rendering, faulty code) prevents this content from being found. Modern JavaScript frameworks often cause problems during indexing (client-side rendering) if not correctly configured.

SEO as a Quality Standard

1. Core Web Vitals Optimisation:
   • LCP (Largest Contentful Paint): Fast loading of main content (< 2.5s).
   • INP (Interaction to Next Paint): Fast response to user interactions across the whole page visit (< 200ms). INP replaced First Input Delay (FID) as a stable Core Web Vital in March 2024.
   • CLS (Cumulative Layout Shift): Avoiding content jumps during loading.
2. Semantic HTML: Correct use of H-tags, alt texts, and ARIA labels for accessibility and machine readability.
3. Structured Data: Implementation of Schema.org annotations to communicate the context of data (products, reviews, events) to search engines.
4. Server-Side Rendering (SSR) / Static Site Generation (SSG): Ensuring that all content is immediately readable for crawlers without having to execute JavaScript.
5. Mobile First and Security: Consistent optimisation for mobile devices and continuous HTTPS encryption.

The Advantage: Better UX = Higher Conversion

The technical measures that search engines love are exactly those that also drive human users towards higher engagement and more purchases.

FAQ

Isn't good content enough on its own?

Good content is the foundation, but technical SEO is the stage. If the stage is dark and access is blocked (slow loading times), no one will read it.

Why is technical SEO suddenly the development team's responsibility?

Because performance and architecture are the strongest SEO signals today. SEO is not a plugin installed at the end, but a property of good code.

References

• Google Search Central Page Experience and Core Web Vitals. Official reference for webmasters and developers on page quality and ranking factors. (2021). developers.google.com/search
• Google web.dev Web Vitals. Google's guide for modern web performance and Core Web Vitals (LCP, INP, CLS). (2020). web.dev/articles/vitals
• Schema.org Structured Data Vocabulary. The open standard for structured data on the web. (2011). schema.org