Key takeaways
- SEO earns the click, AEO earns the answer, GEO earns the recommendation. Three jobs, not three rivals.
- AEO and GEO overlap so heavily that most practitioners treat them as one discipline, and both stand on the same foundations as SEO.
- SEO is not dead. It is the ground floor that AI answer engines still depend on to decide what they can trust and quote.
- You do not choose one. You layer them in order: technical SEO first, then answer-shaped content, then the authority and entity work that earns AI recommendations.
- Answer-shaped content is the shared lever. A Princeton study found statistics, citations and quotations lifted visibility in AI answers by up to 40%.
- Measure them separately: rankings and clicks for SEO, citations and answer boxes for AEO, brand mentions inside ChatGPT, Claude and Perplexity for GEO.
There is no shortage of acronyms fighting for your attention this year. SEO you already know. Then AEO and GEO turned up, usually in a post telling you the first one is finished and you are already too late. Here is the short version, before anyone tries to sell you a package based on the panic.
SEO earns the click, AEO earns the answer, and GEO earns the recommendation. Three different jobs, aimed at three different moments, sharing most of the same foundations. They are not rivals, and you do not have to choose between them.
The confusion is fair enough. The terms are new, half of them were coined by software companies with something to license, and even the researchers who study this admit there is no settled line between them yet. So this piece settles it in plain English: what each one actually means, where they overlap, whether SEO is really dead, and the order to do the work in.
SEO, AEO and GEO in one line each
SEO gets you found in a search engine, AEO gets you quoted in an answer, and GEO gets you named as a recommendation in an AI chat. Same goal in the end, which is a customer choosing you, reached through three different doors.
- Search Engine Optimisation (SEO) is the practice of improving your website and its authority so it ranks in search engines and earns a click. It is the discipline you have known for twenty years: keywords, content, links, site health and the blue links on a results page.
- Answer Engine Optimisation (AEO) is the practice of structuring your content so it becomes the cited source inside a direct answer, including featured snippets, People Also Ask and Google AI Overviews. You are not competing for a position any more, you are competing to be the sentence the engine reads back.
- Generative Engine Optimisation (GEO) is the practice of building your content and reputation so generative AI tools like ChatGPT, Claude and Perplexity cite and recommend you when someone asks them for help. If you want the longer version on that one, we wrote a full explainer on what GEO actually is.
Discovery, answer, recommendation: the real difference
The cleanest way to tell them apart is by what each one is trying to win. Get that straight and the rest falls into place.
SEO wins discovery. The unit of success is a ranking position and the visit that follows it. You show up on the results page, the person clicks, they land on your site. Everything happens on your turf, and you get the traffic.
AEO wins the answer. The unit of success is being the source an engine quotes when it responds directly, whether that is a featured snippet or an AI Overview sitting above the normal results. The person may never click, because they got what they needed in the answer. Your win is being the named source inside it. This is the territory of how to rank in Google AI Overviews, where a passage from your page gets lifted into Google’s own summary.
GEO wins the recommendation. The unit of success is being named inside a generative engine when somebody asks it for a shortlist. Ask ChatGPT for “the best digital marketing agency in Leicester” and the businesses it lists have, knowingly or not, won at GEO. That is a very different game from ranking, and it is why we treat learning to get recommended by ChatGPT as its own body of work.
In practice the last two blur into each other constantly, and both stand on foundations that SEO built. If you want the full map of how this fits together, our guide to answer engine optimisation is the hub for all of it.
SEO vs AEO vs GEO: the comparison at a glance
Here is the whole argument in one table. Read down the columns and the differences are obvious. Read across the “primary signals” row and you will see how much these three actually share.
| Discipline | What it optimises for | Where it shows up | Query type | Unit of success | Primary signals | How you measure it |
|---|---|---|---|---|---|---|
| SEO | Ranking a page and earning the click | Google and Bing results pages, the blue links | Short, keyword-led searches | A ranking position and a visit | Relevance, links, technical health, content quality | Rankings, organic traffic, clicks in Search Console |
| AEO | Being the cited source inside a direct answer | Featured snippets, People Also Ask, Google AI Overviews | Clear questions with a definite answer | A citation or quoted passage in the answer | Answer-shaped content, schema, entity clarity, authority | Answer-box appearances, citations, impressions on question queries |
| GEO | Being recommended inside a generative engine | ChatGPT, Claude, Perplexity, Gemini | Conversational, comparison and “recommend me” prompts | A brand mention or recommendation in the reply | Entity consistency, reviews, third-party authority, citations | Prompt testing, brand mentions, share of voice in AI answers |
The bottom row is the one people skip and then regret. You cannot measure all three the same way, so you cannot run them as one undifferentiated tactic and hope. But the “primary signals” column tells the happier story: the raw materials are largely the same. Which brings us to the part the acronym wars leave out.
Where SEO, AEO and GEO overlap
The three share a bedrock, and it is far bigger than the differences. Almost everything that makes an AI engine quote or recommend you is something good SEO already asked for.
Four foundations do most of the work across all three:
- Entity clarity. The engine needs to know who you are, what you do and where, with consistent information everywhere it looks. Search engines call this entity understanding. AI engines depend on it even more heavily.
- Structured data. Schema markup that spells out what a page is, so a machine can read it without guessing.
- Genuine authority. Being mentioned, linked and reviewed by sources the engine already trusts. Reputation is not a soft metric here, it is the deciding one.
- Answer-shaped content. Content that states a clear answer up front and backs it with specifics, rather than burying the point in paragraph nine.
That last one is measurable. A Princeton-led study of roughly 10,000 queries, the paper that coined the term GEO, found that adding statistics, citing sources and including quotations lifted a page’s visibility in AI answers by up to 40 per cent. Read that back. Cite your sources, use real numbers, quote credible people. That is not some exotic new AI trick, it is the content hygiene good writers and honest SEOs have pushed for years, now with a citation of its own.
Because the signals overlap this much, AEO and GEO get used interchangeably all the time, and the people who study this for a living have not agreed on a firm boundary either. You do not need to lose sleep over which label a given tactic belongs to. You need the underlying work done.
Is SEO dead?
No. SEO is not dead. It is the floor everything else stands on. The AI engines did not throw out the rulebook, they inherited it.
Generative engines still favour pages that are crawlable, fast, well-structured and trustworthy, because those are exactly the signals they use to decide what is safe to quote and confident enough to recommend. An AI is staking its own credibility on the sources it names, so it leans towards the ones that already look authoritative to a search engine. If Google cannot index you, the retrieval layer feeding an AI answer will struggle to find you too. The two problems are the same problem.
What has changed is the stakes. A single AI answer can now stand in for a whole page of links, so being invisible costs more than it used to. ChatGPT alone passed 900 million weekly active users in early 2026, and a large share of them now ask it the questions they used to type into a search box. Being absent from that conversation is not neutral, it is lost ground.
We will be honest about how easy it is to be absent. We ran one of these AI-visibility checks on our own site and scored a flat zero. Humbling, and a useful reminder that ranking respectably in Google does not automatically mean an AI will ever say your name. Search visibility and AI visibility are related, not identical, and you have to earn both.
What your business actually needs
You do not pick one acronym. You layer all three, in order. The order matters more than the labels, because each layer depends on the one beneath it.
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Fix the foundations first (SEO). Crawlable, fast, indexable, sensibly structured, marked up with clean schema. If an engine cannot reach and understand your pages, no amount of clever answer-writing will save you. This is unglamorous plumbing, and it is still where most of the damage hides, so it is worth a proper technical SEO audit before anything else.
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Make your content answer-shaped (AEO). Lead with the direct answer, use question-shaped headings, keep passages self-contained so an engine can lift one cleanly, and add the statistics, sources and specifics the Princeton work rewarded. For a local business, this includes getting your local SEO and Google Business Profile in order, because that is the data AI leans on when someone asks for a recommendation “near me”.
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Build the authority that earns recommendations (GEO). Consistent entity data across the web, real reviews, and mentions from the sources an AI already trusts. This is the slowest layer and the most durable one. It is closer to reputation-building than to on-page tweaks, and it compounds.
That sequence is also how we scope the work. Not a twelve-month lock-in and a 400-line PDF nobody reads, but a scoped monthly engagement with weekly updates, so you can watch the foundations, then the answers, then the recommendations land in that order. You are never trapped, and you can always see what this month bought.
Where to start
Start with what is actually broken, not with the newest acronym on the slide. Most sites we look at are strong in one layer and blind in the next: ranking fine but never quoted, or full of good content sitting on a site an engine cannot properly read. The fast wins come from finding your specific gap, not from buying all three letters at once.
Book a free growth review and we will tell you where you stand across the lot: what is ranking, what is getting quoted in answers, and whether an AI would ever recommend you to a customer. Plain answers, priorities in order, no lock-in.