Explainer
SEO, AEO and GEO: The Difference
SEO earns you a position in a list that a person then chooses from. AEO earns you a mention inside an answer that has already done the choosing. GEO is the layer underneath both: making your business a clear, corroborated entity so those systems know what you are before they decide whether to recommend you. Most businesses need all three, built in the order GEO, SEO, AEO.
Three acronyms, heavily marketed, frequently sold as the same retainer with a new cover sheet. They are genuinely different, but not in the way most sales decks suggest.
| SEO | AEO | GEO | |
|---|---|---|---|
| Stands for | Search Engine Optimisation | Answer Engine Optimisation | Generative Engine Optimisation |
| What it wins | A position in a results page | A citation inside a written answer | Being a business the model can identify at all |
| Where it shows | Google results, Map Pack, Bing | ChatGPT, Perplexity, Gemini, AI Overviews | Underneath both, invisible on its own |
| Measured by | Rankings, clicks, calls | Whether you are named, across a fixed prompt set | Whether facts about you resolve consistently |
| Fails when | Someone outranks you | The model names a competitor instead | Sources about you disagree |
SEO: competing for a position
Classic search optimisation assumes a human will be shown options and will pick one. Everything follows from that: titles written to be clicked, meta descriptions written to persuade, rankings that matter because position one gets far more clicks than position five.
For a local business the most valuable version of this is still the Map Pack, because three results sit above everything else and they carry a phone number. That has not changed and is not about to. Local SEO remains where most enquiries come from today.
AEO: competing to be quoted
An answer engine does not present options. It writes a response and names one, two or three businesses inside it. There is no position to win. There is only whether your version of the answer is easier to quote than everybody else's.
That changes what good content looks like. A page that buries the answer under four hundred words of preamble can rank perfectly well and still never be quoted, because the quotable sentence does not exist. Specificity is what gets lifted: prices, timeframes, conditions, exclusions. Vague copy is unquotable copy.
- State the answer in the opening two sentences, then prove it underneath.
- Give real numbers and real caveats, because those are the parts worth citing.
- Match your structured data to your visible copy exactly, so the markup corroborates rather than contradicts.
- Get present on the sources each engine actually pulls from in your sector, which differ more than people assume.
GEO: being identifiable in the first place
GEO is the least visible and the most load-bearing. Before a model will recommend you, it has to be confident it knows what you are. That confidence comes from independent sources agreeing about your name, your location, your services and your people.
This is entity work, and it is why a lot of AI visibility spending produces nothing. Publishing answer-shaped content on top of an unresolved identity gives a model something well written that it still cannot attribute to a business it trusts.
What actually overlaps
More than the marketing suggests. Good technical foundations serve all three: a fast site, clean information architecture, accurate structured data, a consistent business identity. If an agency tells you AEO requires starting from scratch, be sceptical.
What does not overlap is measurement, and this is where most retainers quietly fail. Traffic and impressions are the wrong instrument for AEO, because a cited business often receives no click at all. If your AEO reporting is a traffic graph, nobody is measuring AEO.
Which do you actually need?
- Emergency local services. SEO first, heavily. Somebody with a burst pipe is not consulting an assistant. Get the Map Pack right and treat AEO as a later layer.
- Considered local services, such as clinics, law firms and removals. All three. That research phase increasingly happens inside an assistant, so being absent from it costs you.
- Businesses trading UK-wide rather than from one location. GEO first. Without proximity to lean on, entity clarity is doing most of the work.
- Anyone whose name is ambiguous or recently changed. GEO first, urgently, before spending anything on content.
If you are not sure which bracket you are in, the fastest way to find out is to ask the assistants yourself. Put your service and your town into ChatGPT, Perplexity and Gemini and see who gets named. That comparison is also the first thing covered on a free audit.
Straight answers
Questions
Does AEO replace SEO?
No. For most local businesses the Map Pack still produces more enquiries than the assistants do, and Google Business Profile signals feed both. AEO is a layer you add so you are not overtaken as behaviour shifts, not a replacement for the thing currently paying the bills.
Is GEO just a new name for technical SEO?
There is real overlap, but the goal differs. Technical SEO makes a site crawlable and fast. GEO makes a business identifiable and corroborated across sources you do not own. You can have a technically flawless site and a hopeless entity.
How do you measure AEO if there are no clicks?
With a fixed prompt set rather than an analytics dashboard. Record which businesses each engine names for your key questions, how you are described when you appear, and how that changes month to month. Search Console will not show you this, which is why most businesses have no idea whether they are being quoted.
Can one person do all three?
Yes, and there is an argument they should, because the three interfere with each other. Schema written for AEO that contradicts the entity work undoes both. Splitting them across suppliers is how sites end up with three versions of the truth.
