AEO vs GEO:
what the terms mean
AEO — answer engine optimisation — emphasises being the source an answer is built from. GEO — generative engine optimisation — emphasises systems that compose prose rather than return snippets. Both are industry coinages rather than defined standards, their usage overlaps heavily, and different practitioners draw the line in different places. The practical position: the underlying work is largely the same under either name, so choose the label your audience uses and judge suppliers on what they measure rather than which acronym they printed.
Each term, as carefully as the usage allows
Answer engine optimisation (AEO)
The emphasis is on being used. An answer engine assembles a response and draws on sources; AEO concerns itself with whether your page is a usable one. That pushes attention onto the form of content — whether a specific question is actually answered in a self-contained passage — and onto whether the claim in that passage is supported anywhere a system could check. The term predates the current wave of generative assistants and was used about featured snippets and similar surfaces before them, which is part of why it carries slightly different connotations for different people.
Generative engine optimisation (GEO)
The emphasis is on the generative step. Where the output is prose composed on the spot rather than a passage retrieved and displayed, the system must decide which organisations it is confident enough to name in a sentence it is writing. That pushes attention onto entity clarity and on the weight of corroboration behind a business, because a name is being asserted rather than a link offered.
| AEO emphasis | GEO emphasis | |
|---|---|---|
| Central question | Is this page usable as a source? | Is this organisation safe to name? |
| Unit of attention | The passage | The entity |
| Typical work | Question-shaped content, quotable structure, supporting evidence for claims | Consistent identity, corroboration weight, removing contradictions |
| Origin of the term | Older; used before current assistants about answer surfaces generally | Newer; coined around generative assistants specifically |
| Overlap | Retrievability, structured data, accurate business information and genuinely useful content sit under both, and most practitioners use the two terms interchangeably in conversation. | |
Why the vocabulary has not settled
There is no standards body for either term. Both emerged from practitioners and vendors naming something they were already doing, at roughly the same time, from different starting points — and neither has an authoritative definition anyone is obliged to follow. You will find reputable sources using AEO as the umbrella and GEO as a subset, others doing the reverse, and a good number treating them as synonyms.
A second reason is that the underlying systems are changing faster than the language describing them. A distinction drawn on how a surface behaved eighteen months ago may no longer describe how it behaves now, so definitions that once carved cleanly have blurred.
There is also a commercial incentive at work, and it is worth naming plainly: a new acronym is a saleable object. If a supplier offers AEO and GEO as separate engagements with separate fees, the useful question is what is measured differently between them. Where the answer is "nothing", you are being sold the same work twice.
The actions that survive the terminology
- Be retrievable. Substance in the served document, not assembled afterwards. Nothing else on this list can be verified until this holds.
- Be one organisation. A single, consistent identity across your site and the records describing you. Ambiguity produces hedging, and hedging reads as absence.
- Answer the question in one place. A passage that states the answer and stands alone, rather than a page that circles the topic and leaves it implied.
- Be corroborated. Claims supported by sources that are not you. This is the slow one and the one that most changes how you are described.
- Remove contradictions. Stale hours, superseded names, closed locations and conflicting descriptions in third-party records.
Every item on that list is worth doing whether you call the work AEO, GEO, AI SEO or nothing at all — which is the strongest available evidence that the distinction matters less than the vocabulary suggests.
Deliberately not arbitrating the terms
OG01 does not claim to own, define or standardise either label, and does not sell "AEO" or "GEO" as products. What it does is measure the conditions both terms are ultimately pointing at: four scoring cards — Brand Intelligence, Search Intelligence, AI Readiness and AI Risk & Exposure — combining into a composite Authority Rating, with findings ordered by impact and the identical measurement run again after the work.
That framing is chosen partly because it survives the vocabulary shifting again. A measurement built around whichever acronym is current would need renaming every eighteen months; one built around retrievability, entity clarity, corroboration and contradiction does not.
Neither term, and no supplier using either, can guarantee that an AI system will cite you. The selection logic is unpublished and unobservable from outside, so a citation promise cannot be verified in advance or attributed afterwards. The Authority Rating is OG01's own measurement rather than a metric from any AI or search company.
Terminology questions
Is GEO just a rebrand of AEO?
Which term should we use internally?
Does either one guarantee we get cited?
Is there structured data specific to AEO or GEO?
Will these terms still exist in two years?
A free reading covers all four scoring cards and returns the first things worth fixing, without a card.