SEO, AEO and GEO sound like three different services competing for your marketing budget. They aren’t. Search engine optimisation (SEO), answer engine optimisation (AEO) and generative engine optimisation (GEO) are three layers of the same job: being found wherever your customers ask. In July 2026, Google said it plainly: optimising for generative AI search “is optimizing for the search experience, and thus still SEO.” This guide compares all three honestly — what each one does, what it costs you in effort, how long it takes, and the order a UK small business should tackle them in.
What is SEO in 2026?
SEO in 2026 is still the foundation: making your website rank in Google’s classic blue-link results, appear in local packs and Google Maps, and earn the clicks that drive enquiries. It covers technical health, content depth, internal linking and authority signals like backlinks and reviews. Nothing about AI search has replaced it — as Google confirmed in July 2026, AI Overviews and AI Mode run on the same core ranking and quality systems. If your pages can’t be indexed and can’t win a snippet, they can’t be cited by AI either. Our guide to ranking on Google in 2026 covers the foundations in full.
What is AEO (answer engine optimisation)?
AEO is the practice of structuring your content so search engines can extract a direct answer from it — the featured snippet, the People Also Ask box, the voice-assistant reply, and now the Google AI Overview. It is downstream of SEO: one clear page per customer question, the answer in the first 40–60 words, machine-readable structure, and schema that mirrors your visible content. Our full answer engine optimisation guide explains the seven AEO practices step by step.
What is GEO (generative engine optimisation)?
GEO is about being named and cited inside AI-generated answers — the recommended solicitor in a ChatGPT reply, the cited source in a Perplexity answer. While SEO optimises the page and AEO optimises the passage, GEO optimises the entity: your brand’s clarity, its off-site mentions, and how quotable your content is. The academic paper that defined GEO (Princeton, Georgia Tech, Allen Institute and IIT Delhi) found that adding citations, expert quotes and statistics lifted a source’s visibility in generated answers by up to 40% — and by 115% for a page that only ranked fifth. Our generative engine optimisation guide covers the full framework.
SEO vs AEO vs GEO: the full comparison
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank your pages in search results | Get your answer extracted by search engines | Get your brand cited inside AI-generated answers |
| Surfaces | Google results, local pack, Maps | Featured snippets, People Also Ask, AI Overviews, voice answers | ChatGPT, Perplexity, Gemini, Google AI Mode |
| Unit of optimisation | The page | The passage (40–60 word answer blocks) | The entity (your brand, consistently defined everywhere) |
| What “winning” looks like | Top rankings + clicks to your site | Your answer shown with your name on it | Your business named as the recommendation |
| Core tactics | Technical SEO, content depth, internal links, backlinks, reviews | Question research, answer-first structure, FAQ schema, E-E-A-T signals | Entity consistency, genuine off-site mentions, quotable statistics, prompt-level testing |
| Typical time to results | 3–6 months for competitive terms | Weeks, once pages are indexed and eligible | Months — brand mentions compound slowly |
| Effort and cost shape | The base investment; everything else builds on it | Mostly a content-structuring discipline, low marginal cost | Ongoing PR, listings and content work; harder to shortcut |
| How you measure it | Search Console: clicks, impressions, positions | Search Console + AI Overview visibility; snippet ownership | Monthly prompt testing across ChatGPT, Perplexity and AI Mode |
The honest takeaway from that table: these are not three products, they are three depths of the same strategy. One well-structured, well-cited page can rank (SEO), supply the extracted answer (AEO) and be quoted by an AI assistant (GEO) at the same time.
So which does your business need? The decision framework
The right order for almost every UK small business is: SEO first, AEO second, GEO third — and here’s why.
- 1. SEO is non-negotiable. AI engines retrieve from the same web Google indexes. A business invisible to Google is invisible to ChatGPT. Fix technical issues, build service pages with real depth, and earn reviews before anything else. This is the foundation our SEO service is built on.
- 2. Add AEO once your pages exist. If you already have service pages and blog content, restructuring them answer-first is high-leverage, low-cost work. AI Overviews now appear on around 43% of US desktop searches (Advanced Web Ranking, July 2026), and Ahrefs found in February 2026 that an AI Overview’s presence correlates with 58% lower click-through for the top-ranking page — being cited inside the answer is how you stay visible when clicks get taxed. Our AI Overviews impact guide for UK small businesses has the full 2026 data.
- 3. Layer GEO in as brand work, not a quick fix. GEO compounds over months: consistent business information everywhere, genuine mentions on third-party sites, statistics and expert quotes journalists and AI models can cite. There is no shortcut — Google’s July 2026 guidance explicitly warns that tricks like llms.txt files, aggressive content chunking and inauthentic mentions don’t work. Our guide to getting mentioned in AI search answers gives the nine-step playbook.
What this means for your type of business
- Local trades (plumbers, electricians, roofers): SEO + local visibility dominate. Your customers still call from the local pack and Google Maps — not showing on Google Maps is the problem to fix first. Add AEO on your service FAQs; GEO matters once you’re established.
- B2B services (accountants, solicitors, agencies): AEO and GEO punch above their weight, because your buyers research with long, specific questions (“how much does X cost?”, “which is better, X or Y?”) — exactly the queries AI answers handle. Comparison and decision content is your highest-ROI territory.
- Ecommerce and product businesses: SEO for category and product pages first; GEO increasingly matters as shoppers ask AI assistants for recommendations (“best Y for Z under £50”).
What about Google AI Mode?
Google’s AI Mode passed 1 billion monthly users at Google I/O in May 2026 (AI Overviews passed 2.5 billion), so it deserves its own mention. The good news: AI Mode draws on the same indexed web and the same ranking systems as classic search — Google Search Central confirms there are no special technical requirements beyond indexability and snippet eligibility. That means your SEO and AEO work is your AI Mode work. The businesses winning in AI Mode in 2026 are the ones with clear entities, quotable pages and genuine third-party mentions — which is exactly what the sequencing above builds.
What doesn’t work in 2026
Google’s July 2026 generative-AI guidance came with a clear “don’t” list, and it’s worth repeating because agencies still sell these as shortcuts:
- llms.txt files — they don’t influence how Google’s AI features use your content.
- Aggressive chunking or rewriting content solely for AI — optimise for people; the same quality systems apply.
- Inauthentic mentions and manufactured citations — fake reviews, paid placements dressed as editorial and spammy directory blasts. White-hat only, always.
- Opting out of AI features — hiding from AI Overviews doesn’t recover clicks; it just removes you from the new surface entirely.
How SEO, AEO and GEO work together on one page
Picture a solicitor’s page titled “How much does conveyancing cost in Leeds?” It ranks on page one (SEO). Its first paragraph answers the question directly in 50 words, so Google extracts it into an AI Overview (AEO). The page cites Land Registry data, includes a quote from a named partner, and is referenced by two local news sites — so when someone asks ChatGPT to recommend a conveyancer, the firm gets named (GEO). One page, three wins, one coherent effort. That’s the model to aim for, not three separate retainers.
How to measure all three
- SEO: Search Console — clicks, impressions, average position, indexed pages. The baseline everything else is judged against.
- AEO: Search Console’s generative-AI performance reports (rolling out from June 2026) show when your pages surface in AI Overviews; track snippet and People Also Ask ownership for your target questions.
- GEO: monthly prompt testing — ask ChatGPT, Perplexity and Gemini the questions your customers ask, and record whether your brand is named, cited or absent. Track it like a share-of-voice metric, not a ranking.
Ready to be found everywhere your customers ask?
SEO, AEO and GEO are one strategy with three depths — and the businesses that sequence them properly in 2026 are capturing the clicks, the answers and the AI recommendations while competitors argue about acronyms. Book your free consultation and we’ll audit your visibility across Google, AI Overviews and ChatGPT, then give you a sequenced plan built around your business — custom-quoted, no fixed packages.
Frequently asked questions
Is GEO replacing SEO?
No. Google confirmed in July 2026 that optimising for generative AI search “is optimizing for the search experience, and thus still SEO” — AI Overviews and AI Mode use the same core ranking and quality systems as classic search. GEO builds on top of SEO; a site that can’t be indexed or ranked can’t be cited by an AI engine either.
What is the difference between AEO and GEO?
AEO is about being extracted — your answer pulled into a featured snippet, AI Overview or voice reply. GEO is about being cited — your brand named as a recommendation inside an AI-generated answer from ChatGPT, Perplexity or Gemini. Think passage versus entity: AEO optimises the answer block, GEO optimises how clearly your brand is defined and mentioned across the web.
Do I need all three, or can I pick just one?
Pick the sequence, not the menu. SEO first (non-negotiable foundation), AEO second (answer-first restructuring of pages you already have), GEO third (brand entity and mentions work that compounds over months). Most small businesses get 80% of the value from strong SEO plus AEO-structured content.
How long does GEO take to work?
Months, not weeks. GEO depends on brand mentions, entity consistency and quotable content compounding across the web — there is no switch to flip. AEO can show results in weeks once pages are indexed; SEO typically takes 3–6 months for competitive terms. Treat GEO as a layer you build continuously, not a campaign with a deadline.
Can one page rank on Google and be cited by ChatGPT at the same time?
Yes — and that’s the goal. A clear, well-structured page with direct answers, real statistics, expert quotes and genuine third-party references can rank in classic results (SEO), supply an extracted answer (AEO) and be cited inside an AI response (GEO) simultaneously. Research on GEO found adding citations lifted visibility in generated answers by up to 40%.
How much do AEO and GEO services cost for a small business?
It depends on your starting point: a site with solid SEO foundations needs mainly content restructuring (AEO) and brand-mention work (GEO), which costs far less than building everything from zero. We don’t sell fixed packages — our pricing is custom-quoted around your site, your market and your goals. Book a free consultation for an honest assessment.