GEO on top of SEO: what changes, what doesn’t, and our first checks

We explain how we at ARTIC layer GEO (Generative Engine Optimisation) on top of SEO for client websites: what changes, what doesn’t, and the first checks we run. The aim is to be cited by AI assistants such as ChatGPT, Gemini or Claude when users ask real questions.

Key takeaways

• GEO builds on SEO: a solid technical and content base is still essential.
• In SEO you fight for position; in GEO you fight for the citation and its frequency.
• We optimise for real queries (prompts) in ChatGPT, Gemini, Claude, Perplexity, Copilot and Google’s AI Overviews.
• Before GEO: fix HTTPS, sitemap, indexing, 4xx/5xx and accidental noindex, and review AI crawler access.
• Extra levers: llms.txt, structured data, answer-first content and brand authority beyond the website.

From SEO to GEO: the difference that matters

When we think about the difference between SEO and GEO, we picture layers. GEO (Generative Engine Optimisation) does not replace SEO; it sits on top of it. If your site already has a solid technical and content base, most of the groundwork is done.

What changes? The unit of work shifts from a keyword to the real question (prompt) your customer would ask. The objective moves from “win the position” to “win the citation” inside the AI’s answer. And measurement evolves: beyond rankings, we look at how often you are mentioned or cited across engines, relative to competitors.

What doesn’t change? You still need clean technical SEO, clear and verifiable content, and authority. These fundamentals remain essential for Google and for AI assistants alike. For context on how this fits into conversational search, see our AI-focused approach in AI SEO for B2B at B2B AI SEO.

Engines and signals we prioritise

We work visibility in ChatGPT, Gemini, Claude, Perplexity, Copilot and Google’s AI Overviews. Rather than optimising for a single search engine, we align your presence with how these systems assemble answers.

Three signals lead:

• Authority and coherent entity: your brand should be unambiguous across the web.
• Citable content: direct answers, definitions and FAQs that models can extract and quote.
• Structured data (schema) and geographic context when relevant.

The GEO goal is simple: when someone asks an AI for suppliers or references in your sector and area, your brand should be among the recommendations. That means unifying website, listings and third‑party mentions to reinforce authority. Explore how we frame GEO for generative engines in GEO for generative engines and how we pair it with strong SEO fundamentals in SEO foundations for B2B.

What to review now (practical checklist)

Before touching anything GEO, we make the technical base spotless:

• HTTPS enabled sitewide (no mixed content).
• Valid sitemap and correct indexing of key URLs.
• Fix 4xx/5xx errors that break crawling.
• No accidental noindex on important pages.

AI crawler access control:

• robots.txt, CDN and firewall: ensure you are not unintentionally blocking GPTBot, OAI‑SearchBot, ClaudeBot, Claude‑SearchBot, PerplexityBot, Google‑Extended or Applebot‑Extended.
• Distinguish training vs real‑time citation: there are different bots; you can block model training while still allowing appearance in citations.

Additional early levers:

• Place an llms.txt file at the domain root.
• Add schema to key pages (organisation, services, FAQs and location where relevant).
• Write answer‑first content: start with a concise answer, then expand.
• Strengthen brand authority through consistent mentions in trusted third‑party sources.

Citable content and a coherent entity

To win the citation, we rewrite key pages so they are easy for models to parse and quote:

• Answer‑header: a 1–3 sentence definition or solution at the top.
• Verifiable development: short paragraphs, lists and concrete details.
• FAQs using the real questions customers ask (their prompts).
• Schema (Organization, Service, FAQ, etc.) to reinforce machine understanding.

In parallel, we work on the brand entity: name, activity and location presented consistently across your website, business listings, directories and reviews. If your business is local or serves defined areas, we make the geographic context explicit so it matches location‑aware queries.

This approach helps engines like ChatGPT, Gemini, Claude, Perplexity, Copilot and Google’s AI Overviews identify you as a citable source. Operationally, our aim is that AI systems can understand, interpret and recommend your brand when someone asks about your products or services.

Measuring and keeping GEO healthy over time

We track your brand’s visibility against competitors for real queries inside ChatGPT, Gemini and Google’s AI Overviews, monitoring if you are cited and how frequently. The primary KPI becomes mentions and citations in AI assistants, alongside traditional SEO metrics.

With that readout, we iterate:

• Content adjustments to improve clarity and quotability.
• Reinforce structured data where we spot ambiguity.
• Grow authority and mentions in relevant third‑party sources.
• Periodically review robots.txt and llms.txt so access policies don’t close doors by accident.

This cycle runs together with SEO: stable technical SEO + citable content + a strong, unambiguous entity. That alignment connects day‑to‑day work with the GEO objective: being recommended by AI when prospects ask about your category, products or region.

Frequently asked questions

What is the difference between SEO and GEO?

In SEO you aim to win a position in traditional results; in GEO you aim to win a citation inside an AI‑generated answer. The focus shifts from keywords to the customer’s prompt, and success is measured by mention or citation frequency across engines.

Do I need solid SEO before working on GEO?

Yes. GEO is built on top of SEO. Without a clean technical base (HTTPS, correct indexing, no 4xx/5xx or accidental noindex) and clear content, AI assistants are unlikely to identify and cite your site.

Should I allow AI bots to crawl my site?

Review robots.txt, CDN and firewall to avoid unintentionally blocking GPTBot, OAI‑SearchBot, ClaudeBot, Claude‑SearchBot, PerplexityBot, Google‑Extended or Applebot‑Extended. There are different bots for training and for real‑time search/citation, so you can block training while still allowing citations.

How do you measure GEO success?

By your presence in real queries and the frequency with which engines like ChatGPT, Gemini, Claude, Perplexity, Copilot and Google’s AI Overviews mention or cite you. This sits alongside classic SEO metrics such as rankings and organic traffic.

Shall we talk?

If you want your marketing to work like this, meet the ARTIC team, see our case studies or tell us about your project.

Sources

• GEO Agency (Generative Engine Optimization)
• B2B AI SEO Agency
• SEO Agency

Informative article with the sources linked, up to date on the publication date.