Last updated: May 2026
You have spent years building your Google rankings. Now a growing number of your potential customers are asking ChatGPT, Perplexity, or Google AI Overviews instead. The answer they get does not mention you. Two different discovery channels, two different optimisation strategies. You need both.
In brief: SEO (Search Engine Optimisation) gets your website ranked in Google's list of results. GEO (Generative Engine Optimisation) gets your content cited inside AI-generated answers. They share foundations (authoritative content, clean structure, strong sources) but differ in execution. In 2026, with Gartner projecting a 25% decline in traditional search volume and AI search growing rapidly, businesses need both to remain visible.
The quick answer
SEO and GEO are not competing strategies. They are complementary layers of the same goal: making your business visible to people searching for what you offer. The difference is where the visibility happens.
SEO puts you on the list. GEO puts you in the answer.
SEO: the established layer
SEO optimises your website for traditional search engines. When someone searches "web design agency UK" on Google, SEO determines whether your site appears on page one or page ten.
The core mechanics have been stable for years. Create authoritative, useful content. Build it on technically sound foundations: fast loading, mobile-responsive, semantic HTML, proper meta tags. Earn backlinks from credible sources. Target specific keywords with dedicated pages. Build internal linking structures that help Google understand your site.
SEO is a compounding investment. A well-optimised page published today will generate traffic for years. The results are measurable through tools like Google Search Console: impressions, clicks, rankings, click-through rates. According to BrightEdge research, organic search drives 53% of all website traffic. It remains the single largest channel for most businesses.
The limitation of SEO in 2026 is that it depends on the user clicking through to your website. If the answer appears directly in Google's AI Overview, or if the user asks ChatGPT instead of searching Google, your traditional ranking may not generate the visit it once did.
GEO: the emerging layer
GEO optimises your content for AI search engines. When someone asks ChatGPT "how much does a website cost in the UK," GEO determines whether your content is one of the sources the AI cites in its response.
The term was formally introduced in a 2023 research paper by Princeton University and Georgia Tech. It has moved from academic concept to business necessity faster than most predicted. Google AI Overviews now reach over 2 billion monthly users. Perplexity processes hundreds of millions of queries per month. ChatGPT handles billions of prompts.
GEO works differently from SEO. AI does not rank pages in a list. It synthesises answers from multiple sources. The content it selects tends to have clear definitions (first-sentence answers to questions), specific data points (verifiable numbers, not vague claims), structured formatting (FAQ sections, comparison tables, definition paragraphs), and strong source authority (cited sources, authoritative domain, fresh content).
The key insight: GEO rewards content that is independently citable. Each paragraph should be able to stand alone as a useful answer. This is a different writing discipline from SEO, which optimises for sustained engagement across a full page.
Where they overlap
The good news is that strong SEO and strong GEO share the same foundations. Authoritative, well-structured content with verifiable facts performs well in both traditional and AI search. If your website has clean HTML, fast loading, proper schema markup, and genuinely useful content, you are already partly optimised for both.
The shared elements include quality content that answers real questions, technical SEO foundations (fast, mobile, accessible), schema markup and structured data, strong E-E-A-T signals (experience, expertise, authoritativeness, trustworthiness), and regular content updates that keep information current.
Where they differ
The differences are in the detail.
SEO prioritises keywords in titles, headings, and meta descriptions. GEO prioritises clear, quotable definitions and fact-dense paragraphs that AI can extract.
SEO focuses on earning clicks. GEO focuses on earning citations, even when no click occurs. Your brand is mentioned in the AI answer. That has value even without the visit.
SEO rewards long-form content that keeps users on the page. GEO rewards content structured so individual sections can be extracted independently. An FAQ answer needs to work as a standalone 50-word citation, not just as part of a larger page.
SEO is measured through Search Console data: rankings, impressions, clicks. GEO measurement is still maturing. Tools for tracking AI citations are emerging but not yet standardised.
What to do about it
You do not need two separate strategies. You need one content strategy that addresses both.
Add In Brief blocks to your key pages: 40 to 60 word summaries that directly answer the primary question. These serve both featured snippets (SEO) and AI citations (GEO).
Write definition-first paragraphs after every "What is" heading. Make the first sentence independently quotable.
Build FAQ sections with 5 to 8 questions per page. Write each answer as a self-contained 40 to 60 word response with at least one specific fact.
Cite your sources. In-text attribution and a sources section with real URLs. AI systems are more likely to cite content that itself cites authoritative sources.
Implement schema markup: Organisation, FAQ, Article, and HowTo schemas help both Google and AI systems understand your content.
At Anatra (/services), we build every website with both SEO and GEO foundations included. There is no extra cost and no extra timeline. It is part of how we structure content from day one. Read our full guide to GEO (/thinking/what-is-geo) or our SEO basics guide (/thinking/seo-basics-business-website) for implementation details.
Frequently asked questions
Is GEO replacing SEO?
No. GEO complements SEO. Traditional search remains the largest traffic channel for most businesses. GEO adds visibility in a growing channel. The foundations are shared, so investing in both is not double the work.
Which should I prioritise, SEO or GEO?
SEO first. It has established tools, measurable results, and proven ROI. Layer GEO on top through structured content, FAQ sections, and citation-worthy writing. Most GEO best practices also improve SEO performance.
Do I need specialist help for GEO?
Not necessarily as a separate engagement. A web designer or content strategist who understands GEO can build it into your site from the start. If your existing site needs retrofitting, a content audit focused on GEO gaps is typically £400 to £800.
How do I measure GEO performance?
GEO measurement tools are still maturing. Currently, you can manually check AI responses for your target queries in ChatGPT, Perplexity, and Google AI Overviews. Tools like Frase and Surfer are adding GEO tracking features. Monitor your brand mentions across AI platforms.
Can I do GEO myself?
Yes. The practical steps (In Brief blocks, FAQ sections, definition paragraphs, source citations) are content changes you can make without technical help. Schema markup implementation may require developer assistance.
Sources
- Aggarwal et al., "GEO: Generative Engine Optimization," Princeton/Georgia Tech, 2023: https://arxiv.org/abs/2311.09735 (https://arxiv.org/abs/2311.09735)
- Gartner, Predicts 2025 Search Marketing: https://www.gartner.com/en/marketing (https://www.gartner.com/en/marketing)
- BrightEdge, Organic Search Share of Traffic: https://www.brightedge.com (https://www.brightedge.com)
- Frase.io, GEO Guide 2026: https://www.frase.io/blog/what-is-generative-engine-optimization-geo (https://www.frase.io/blog/what-is-generative-engine-optimization-geo)