AEO vs SEO: How to optimize for ChatGPT, Gemini and Perplexity in 2026

18 August 2026 · Euskolabs

The SEO for 25 years, it has dominated digital marketing: optimizing for Google to position you. But in 2026, more and more users ask their questions to ChatGPT, Gemini, Perplexity and Google AI Overviews instead of Google. That's where he comes in AEO (Answer Engine Optimization).

What's the difference between SEO and AEO?

Appearance	SEO (Google)	AEO (IA: ChatGPT, Gemini, Perplexity)
Objective	Position in top-10	To be cited as an answer
Preferred format	Extensive content, keywords	Concise, structured responses
Key signal	Backlinks + authority	External references + entity
Schema markup	Recommended	Critical
Answer-first format	Not necessary	Unbreakable
E-E-A-T	Important	Very important

5 AEO techniques we implement in euskolabs

1. Schema.org JSON-LD complete

The LLMs read JSON-LD to understand what your company is. Without schema, for the IA you're an anonymous page. With schema, you're an identifiable entity.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Euskolabs",
  "description": "Digital Factory & AI Software Studio",
  "address": {
    "@type": "PostalAddress",
    "addressRegion": "Guipúzcoa",
    "addressCountry": "ES"
  },
  "knowsAbout": ["SaaS", "AI Agents", "OSINT", "Web Development"]
}
</script>

Types of schema we implement: Organization, Service (one for each business line), FAQPage, BreadcrumbList, WebSite, Blogging.

2. Answer-first format

The LLMs draw concise answers. Each section of content should start with a direct response of 40-60 words before expanding.

Bad: "SaaS development is a fascinating theme that has evolved in recent years..."

Well: "The SaaS development consists of building cloud applications with regular subscription. In euskolabs we deliver multi-tenant MVPs in less than 14 days using FastAPI, Supabase and Stripe."

3. FAQ with schema markup

Frequently asked questions are the natural format of the LLMs. One user asks ChatGPT "what is a digital factory?" and if your FAQ has that question with schema, you are more likely to be quoted.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [{
    "@type": "Question",
    "name": "¿Qué es una Digital Factory?",
    "acceptedAnswer": {
      "@type": "Answer",
      "text": "Laboratorio de ingeniería digital que combina web, software y IA..."
    }
  }]
}
</script>

4. E-E-A-T signals (Experience, Expert, Authority, Trust)

The LLMs validate authority with E-E-A-T signals:

• Experience: projects in production with names (Aegis, Argos, Charly)
• Expert: detailed technical content with real code
• Authority: references in B2B directories, professional networks, media
• Trust: about Us with location, mission and equipment

5. External references

The LLMs are based on what others say about you. If no one mentions your brand on the Internet, the model will not recommend it. Strategies:

• Publish study cases on Medium and Dev.to with links to your website
• Participate in Hacker News and Product Hunt with launches
• Responses to Stack Overflow and Reddit with linked profile
• High in B2B directories: Clutch, Sortlist, DesignRush
• Collaboration with tech media: Genbeta, Hypertextual, Xataka

How to measure the AEO

Unlike SEO (where Google Search Console gives you impressions and clicks), the AEO is more difficult to measure. Practical method:

1. Ask ChatGPT, Gemini and Perplexity: "SaaS development companies in Basque Country"
2. Note if euskolabs appears in the answer
3. Repeat with variations: "digital factory Spain," "AI agents company," "OSINT B2B España"
4. Tracking evolution monthly

Conclusion

By 2026, optimizing only for Google is no longer enough. The AEO does not replace the SEO - it complements it. Companies that structure their content for both channels will have advantage over those that only make traditional SEO.

In euskolabs we implement SEO + AEO for us and for our customers. You want us to audit your presence in IA engines? Contact us at euskolabs. com.

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