AEO vs SEO: the difference, the overlap, and how to run both
SEO earns the click. AEO earns the citation. They share a foundation, and the businesses that win the next few years are the ones that treat them as one programme rather than a choice.
SEO (search engine optimisation) is the work of ranking your pages so people click through from a results page. AEO (answer engine optimisation) is the work of becoming the source an assistant like ChatGPT, Perplexity, Gemini or Google AI Overviews quotes when it answers a question directly. They are not rivals: both run on the same entity, structured-data and content foundation, but SEO optimises for the ranked link while AEO optimises for the quoted passage. Most credible programmes need both, sequenced so the SEO groundwork feeds the AEO citations.
AEO vs SEO, in full.
If you have been told AEO is the thing that finally kills SEO, you have been told a headline, not the truth. The two disciplines answer different questions. SEO asks how do we rank a page so a person clicks it. AEO asks how do we become the source a model quotes when it answers the question outright, before any click happens at all. The confusion is understandable, because the underlying work overlaps so heavily. The distinction that matters is the target, not the toolkit.
Here is the part most comparison articles skip. Answer engines are not a separate internet. When ChatGPT, Perplexity or Google's AI Overviews decide who to cite, they draw on the same ranked, crawlable web that SEO has always served, plus the structured data and third-party corroboration that tell a model who you are and whether to trust you. That is why strong SEO is usually a precondition for AEO, not an alternative to it. Strip out the rankings and the authority, and there is simply nothing for the machine to quote.
You will also see GEO, generative engine optimisation, used more or less interchangeably with AEO. We treat them as the same job under two labels: getting cited by the generative systems your buyers now ask before they reach a search box. What genuinely changes between SEO and AEO is measurement. SEO is legible in rankings, sessions and the enquiries that follow a click. AEO is legible in citation share, whether you are named when the assistant answers, and the assisted pipeline where an AI answer was part of the path. Different scoreboards for different plays in the same match.
So the honest answer to aeo vs seo is that the question is slightly wrong. For almost every business we work with, it is not one or the other. It is SEO first or alongside, AEO layered on once there is authority worth citing, both measured against the same commercial outcome. The rest of this page is how we run that in practice.
AEO vs SEO, broken down.
What SEO optimises for
The ranked link. Technical health, crawlability, Core Web Vitals, keyword and content strategy, on-page structure and authority, so your pages rank and earn the click. This is the layer that still drives most measurable pipeline for most businesses, and the one AEO quietly depends on.
Explore →What AEO optimises for
The quoted passage. Entity reconciliation, answer-structured content, feeds and schema aimed at the sentences a model repeats when it answers a question in your category. The goal is to be the named source, not a link buried below the fold of an answer.
Explore →Where they overlap
Structured data, entity consistency, semantic HTML and content that genuinely answers the question serve both at once. Roughly the same foundational work underpins a good ranking and a good citation, which is why running them as separate agencies wastes money and creates contradictions.
Where GEO and LLM SEO fit
Generative engine optimisation and LLM SEO are labels for the same citation-focused work AEO describes. We do not sell them as three products. It is one discipline: getting the generative systems your buyers use to treat you as a source worth quoting.
Explore →How the two are measured
SEO is tracked in rankings, organic sessions and click-driven enquiries. AEO is tracked in share of answer across ChatGPT, Gemini, Perplexity and AI Overviews, plus assisted pipeline. We hold both to a revenue line rather than to impression counts.
Explore →When AEO is premature
If you have no structured data, thin content and little third-party authority, there is nothing for a model to cite yet. In that case the honest move is to build the SEO foundation first and layer AEO on once it can actually pay off. We will tell you when that is the case.
The way we run AEO vs SEO.
Baseline both scoreboards
We measure where you rank and where answer engines currently source your category, and who they credit today. One honest starting line for SEO and AEO, so later movement is provable rather than asserted.
Fix the shared foundation
Technical health, schema, entity reconciliation and architecture come first, because they carry both rankings and citations. Doing this once, properly, is cheaper than paying two teams to fix it twice.
Sequence, do not split
We decide what leads for your situation. Most businesses need SEO momentum before AEO can bite, so we weight the early work accordingly and layer citation activity in as authority builds.
Build content that ranks and gets quoted
Answer-structured pages, primary data and reference material written to earn the ranked click and to be repeated verbatim by an assistant. The same page can do both when it is structured for both.
Earn corroboration
Citations and mentions from the sources models already trust in your sector, through digital PR rather than bought links. This is the authority layer that holds rankings and makes a model treat you as a source.
Report against revenue
Rankings and sessions on the SEO side, share of answer and assisted pipeline on the AEO side, both tied back to enquiries. You see which layer moved, and whether it moved money.
How we approach AEO vs SEO.
Same foundation, different target
Clean architecture, schema, consistent entities and genuinely useful content serve both. The split is what you are optimising toward: SEO wants the ranked link that earns a click, AEO wants the passage a model repeats. Get the foundation right once and it pays into both.
SEO is not going away
Assistants still lean heavily on the ranked web to decide who to cite, and most buyers still search. AEO does not replace SEO, it sits on top of it. Anyone selling AEO as a reason to abandon rankings is selling you a gap in your own funnel.
AEO needs something to cite
A model can only quote a source that exists, is parseable and is corroborated elsewhere. Without the SEO and authority layer underneath, there is nothing for an answer engine to surface, which is why we are honest about when AEO is premature.
Measured differently, on purpose
SEO shows up in rankings, sessions and pipeline. AEO shows up in citation share and assisted enquiries. We report both against revenue, never vanity impressions, so you can see which layer is doing the work.
What AEO vs SEO puts on your desk.
Who runs this, and how honestly
Rogue Logic is the trading name of Bryley Ltd, a four-person team of senior practitioners with around forty years of combined experience and no juniors learning on your budget. AEO is young enough that a lot of the market is guessing loudly. We would rather be precise about what moves and what does not, and about when one of these disciplines is not yet worth your money.
Senior people do the work
The person who scopes your SEO and AEO is the person who runs it. No account-management layer, no handoff to juniors, no template dressed up as strategy.
We move inputs, we do not promise placements
Nobody can guarantee a ranking or a citation in an AI answer, and we will not pretend otherwise. We move the inputs the systems actually use and report share of answer honestly, up or down.
We tell you when to wait
If AEO is premature because the SEO and authority foundation is not there, we say so and build the foundation first. Selling you the wrong layer at the wrong time is how trust gets burned.
AEO vs SEO: common questions.
What is the difference between AEO and SEO?
SEO optimises your pages to rank in search results so people click through. AEO optimises your presence so AI assistants quote you as the source when they answer a question directly. Same foundation of clean structure, schema and entities, different target: the ranked link versus the quoted passage.
Is AEO replacing SEO?
No. Answer engines still draw heavily on the ranked, crawlable web to decide who to cite, and most buyers still search. AEO layers on top of SEO rather than replacing it. Anyone telling you to drop SEO for AEO is describing a gap in your own funnel.
Do I need both AEO and SEO?
For almost every business, yes. SEO usually needs to come first or run alongside, because a model can only cite a source that exists, is parseable and is corroborated elsewhere. AEO is layered on once there is authority worth citing. We sequence the two rather than making you choose.
Is AEO the same as GEO or LLM SEO?
Effectively, yes. Generative engine optimisation and LLM SEO are alternative labels for the same job: getting the generative systems your buyers use to treat you as a source worth quoting. We run it as one discipline rather than three separate products.
How is AEO measured compared with SEO?
SEO is measured in rankings, organic sessions and click-driven enquiries. AEO is measured in share of answer across ChatGPT, Gemini, Perplexity and AI Overviews, plus assisted pipeline where an AI answer was part of the path. We tie both to revenue rather than impression counts.
Can you guarantee we get cited by ChatGPT?
No, and anyone who says they can is guessing. We move the inputs the models actually use, clean structured data, consistent entities, source-worthy content and third-party corroboration, and report your citation share honestly whether it goes up or down.
When is AEO not worth it yet?
When you have thin content, no structured data and little third-party authority, there is nothing for a model to cite. In that case we build the SEO foundation first and add AEO once it can actually pay off. We would rather tell you to wait than take the budget.
How much does running both cost?
Our retainers start from £1,500 per month, with AEO layered onto the SEO foundation on tiers above the entry level. The right figure depends on your category and how much foundational work is needed. We scope it honestly before you commit.