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AEO vs GEO: two names for machine answers, compared
AEO aims to make a page the passage a system lifts and shows; GEO aims to make it one of the sources a system composes its own answer from. The two are often used as synonyms, but they describe different outcomes. Both are terms of the AI SEO niche, and this page sets them side by side.
The two in one table
Each term has its own page with the definition and sources: what is AEO and what GEO means. Side by side, they differ on every practical point except the page they start from.
| AEO | GEO | |
|---|---|---|
| Outcome sought | Your passage is shown as the answer | Your page is among the sources of a composed answer |
| What the system does | Extracts a passage | Synthesises from several sources |
| Where it shows | A quoted passage, often with a link | A paragraph that may not name its sources |
| How it fails | Visibly: another page is quoted | Quietly: your page is left out or paraphrased wrongly |
| What helps most | A direct answer that stands alone | Specific, attributed, consistent facts |
| Origin of the term | Industry usage, no single definition | A 2023 research paper (arXiv 2311.09735) |
Extraction against synthesis
The practical split is the unit. Extraction works on a passage: one paragraph has to answer the question cleanly without the paragraphs around it. Synthesis works on facts: the system reads several sources, reconciles them and writes its own text, so what matters is whether your facts are specific enough to be used and consistent enough to be trusted.
Which one applies to your page
Usually both, in different places. A page that answers a common question in its opening sentence is a candidate for extraction; the same page, with precise and sourced facts further down, is a candidate for synthesis. The choice between the terms matters less than the two habits they point to: answer early, and state facts in a form that can be checked.
Where the distinction stops being useful
The two terms overlap heavily and are used interchangeably by most people who use either. The distinction worth keeping is extraction against synthesis: whether you are trying to be quoted, or trying to be one of the sources behind a paragraph nobody attributes.
Everything else that gets attached to the acronyms is marketing around a fairly small idea: that one is newer, that one is about chatbots and the other about search.
AEO vs SEO, and GEO vs SEO
Neither replaces SEO; each changes what a page competes for. SEO competes for a position in a list of links, and the reader then chooses a result. AEO competes to be the passage an answer engine lifts and shows as the answer. GEO competes to be among the sources a generated answer is built from, and to be represented accurately when it is.
All three start from the same page. A page that cannot be fetched or does not say what it is about fails at all three, which is why the groundwork is shared: content a machine receives, a direct answer early, and facts stated where they can be read.
Google takes the same view for its own engine. Its guide to generative AI features in Search, last updated on and checked on , says: "From Google Search's perspective, optimizing for generative AI search is optimizing for the search experience, and thus still SEO." The statement is about Google Search, including AI Overviews and AI Mode. For other engines the terms still describe what a page competes for, which is how this page uses them.
They fail differently
Extraction fails visibly. A passage is lifted that answers a slightly different question, or nothing is lifted at all and somebody else's page is quoted instead. The remedy is structural: say the thing plainly, early, and in a passage that survives being read on its own.
Synthesis fails quietly. Your page is one of five behind a paragraph that names none of them, and where two of the five disagree, the composed answer picks a side without telling anyone. You do not see this happen and there is no listing to check. The remedy is not structural but factual: be specific enough to be worth resolving toward, and consistent enough that nothing on your own site argues with you.
Notice that the second remedy is mostly ordinary editorial discipline. It is also the harder of the two, because it cannot be verified by looking.
What neither of them promises
No arrangement of a page obliges an engine to use it.
Neither term is a lever: both describe how a page is treated once a machine has it, and the machine's decision remains the machine's. A page written for extraction is easier to extract from, which is a real advantage and a modest one. No arrangement guarantees a citation.
What holds up is smaller. Pages that state what they are, answer what they were asked, and declare their basic facts in a form a program can read are the pages that can be used. The rest is out of your hands.
What either one asks of a page
Both assume the machine received the page. That is a larger assumption than it sounds: a site that assembles its content in the browser sends a shell first, and a reader that does not execute that step receives the shell. Nothing written for extraction or synthesis survives being absent.
Both also assume the page says what it is about somewhere a machine looks. Google notes that structured data "isn't required for generative AI search," and its systems read the page itself. Readers that rely on declared metadata are another matter: to them, a page with no description and no structured data is legible only through its text, which is the gap AI SEO closes.
FAQ
Is GEO just a new name for AEO?
Nearly. The useful split is extraction against synthesis: AEO is about a passage being liftable as the answer, GEO about being among the sources an answer is composed from. Most advice applies to both, and where a piece of advice applies to only one of them, it is usually about structure rather than about substance.
Do I need to write differently for each?
No. Writing that answers a question in its first sentence and stands alone out of context serves both. The rest is the same editing you would do anyway: cut the throat-clearing, put the claim before the reasoning, and make each section survive being read without the one above it.
Does either one replace search optimisation?
No. A page still has to be found the ordinary way before any of this applies. These terms describe what happens to a page after a machine already has it, which makes them a layer on top of the older work rather than a replacement for it. Sites that treat them as a replacement tend to discover the omission slowly.
Do I need to do anything technical for AEO or GEO?
Less than the acronyms imply, and the little there is overlaps entirely with ordinary hygiene. The page has to arrive whole at something that does not run scripts, and it has to declare what it is. Neither requirement was invented by answer engines; both were true for search engines first.
Is any of this measurable?
Partly, and less than you would like. Extraction leaves traces: you can see a passage quoted. Synthesis usually leaves none, because the paragraph that used your page names nobody. Anyone reporting a precise share of generated answers is measuring a proxy, and the proxy deserves saying out loud.