Your buyers now ask ChatGPT, Perplexity and Google’s AI features before they open your website. Answer engine optimisation (AEO) is how you make sure those answers mention you. Here is what the term means, how it differs from SEO, and why smaller specialist firms have a genuine edge.
The question your buyers no longer type into Google
Picture a marketing director shortlisting agencies, software or consultants. Five years ago, that search started with a keyword and ten blue links. Now it starts with a question typed into an AI assistant, and the answer comes back as a paragraph naming three or four options. Either your brand is in that paragraph, or you were never in the running.
This is not a fringe behaviour. Forrester’s Buyers’ Journey Survey of nearly 18,000 business buyers found that 94% used AI during their most recent purchase, and twice as many buyers named generative AI or conversational search as a more meaningful source of information than any other, ahead of vendor websites, product experts and sales teams (Forrester, 2026).
We wrote about the early stage of this shift in our guide to visibility in the age of zero-click search. What has changed since is the scale, and the vocabulary. Marketers now face a cluster of new acronyms, AEO and GEO chief among them. This article explains what they mean, what to do about them, and why the news is better for specialist B2B firms than the headlines suggest.
AEO meaning: answer engine optimisation in plain English
Answer engine optimisation (AEO) is the practice of earning a place in the direct answers that AI tools give to a question. When someone asks ChatGPT to recommend providers, or Google’s AI Overview summarises a topic, AEO is the work of making your content one of the sources those answers are built from, and your brand one of the names they mention.
Generative engine optimisation (GEO) is a close sibling. Where AEO focuses on appearing in answers, GEO concerns how generative AI models read, remember and represent your brand across everything they have learned. In practice the two overlap so heavily that most B2B firms can treat them as one discipline.
Search engine optimisation (SEO), the practice both terms grew out of, has not gone anywhere. Search engines still matter, and much of what makes a site good for Google makes it good for AI. The difference sits in what each system does with your content. A search engine ranks pages and lets the reader choose between them. An answer engine selects a small number of sources and composes the answer itself. Your content used to compete for a click. Now it competes for a citation.
Where the jargon stops
The labels matter less than the behaviour behind them. Whether a given tool counts as an answer engine, a generative engine or a search feature, the question for your business is the same: when a buyer asks about your category, does the machine know you, trust you and quote you? From here, we will use AEO as the umbrella term.
Key takeaway: SEO gets you ranked, while AEO and GEO get you quoted right where prospective buyers are considering your services.
The two new jobs your content now has
Content used to have one discovery job: win a click from a list of results. That job is shrinking. In its place are two new ones, and they have to be done in order.
Job one: be chosen by the machine
Before an AI answer can mention you, its systems have to find your content, read it without obstruction, understand what your business is and what it does, and then judge it credible enough to cite to the reader. That calls for pages a machine can parse, facts a machine can verify, consistent details about your business across the web, and content that answers real questions directly rather than circling them.
We explain the technical side of this in our companion article: How AI Crawlers Read Your Website.
Job two: be chosen by the human
A reader who arrives from an AI answer is not a cold visitor. They have already seen a summary of the topic and a shortlist of names. They arrive comparing, and they arrive informed. Content that merely restates what the AI told them gets a polite close of the tab. Content that adds judgement, experience and a point of view is what turns a citation into a client. Of course, buyers doing this research still verify what AI tells them; the machine opens the door, and your writing still has to walk them through it.
Most B2B content was built for neither job. It was built for the old one: winning a click from organic search.
AEO vs SEO: what carries over and what changes
If you have invested in doing SEO properly, none of that spend is wasted. Clear site structure, topical depth, E-E-A-T signals (experience, expertise, authoritativeness, and trustworthiness), schema markup and genuine expertise count for as much in AI answers as they did in rankings, and often more. Our guide to B2B website structure covers the foundations, including structuring your content to guide buyers through their decision journey.
Building on SEO and E-E-A-T foundations, the following three things have changed with the rise of AEO and GEO:
First, questions replace keywords as the unit of planning. Prompts typed into AI tools run far longer than typed searches, and they are phrased as questions. Content planned around the questions buyers ask, with a direct answer near the top of each section, is the format answer engines favour.
Second, your presence beyond your own website carries more weight. AI systems build category answers from directories, round-ups, reviews and independent coverage as much as from brand websites. Being described accurately in third-party sources is now part of the content job.
Third, evidence works harder than eloquence. Researchers at Princeton and Georgia Tech tested what makes content more likely to be used in generative answers, and found that adding clear statistics and citing credible sources lifted a source’s visibility by up to 40% (Aggarwal et al., 2024). The machines reward precisely what good editors have always asked for: specific claims, named sources, and a point.
Which brings us to the observation we keep returning to at Contentifai: good content is good content. There is no trick to game here, and the firms hunting for one have missed the point. Thoughtful, carefully written work that leaves the reader knowing more than they did before is what humans value and what machines now measure for.
AEO matters, but it is a way of making good content legible to a second kind of reader. It is never a substitute for the content itself.
How smaller B2B specialists can win at AI search
AI answers are not assembled by brand size. They are assembled from sources that describe a category clearly, which means a ten-person specialist firm that is specific, consistent and well evidenced can appear in answers ahead of a well-known household name for relevant queries.
We know because we ran the test on ourselves. When we put our own website through our AI readiness check, ChatGPT and Google’s AI described Contentifai accurately by name: our positioning, our founder, our sectors, our location. But category-level questions, the “recommend me an agency” kind, did not surface us at all, because those answers are drawn from third-party lists and directories we had not yet appeared in.
Our own readiness check verdict: AI knows us by name, but not yet by category. Most B2B firms will find the same pattern, and it is fixable.
We published the full findings in our self-audit case study.
The stakes are not theoretical for firms like ours, or like yours. Semrush surveyed more than 600 B2B professionals and found that 66% regularly use AI to research products, vendors or suppliers, with agencies and service providers the most-researched category of all, at 51% (Semrush, 2026).
Find out what AI currently says about your brand
Our free AI Readiness Check shows you what AI tools can and cannot see on your website, what they say about your brand today, and what to fix first. Many firms will discover the same pattern we did, and how to improve their visibility in generative AI answers.
How to start with AEO: three steps we recommend
- Check that the machine can read your website. Crawler access, page rendering and schema markup decide whether AI systems receive your content in the first place. Our guide to how AI crawlers read your website walks through the checks, three of which you can run yourself today.
- Answer real questions directly. Plan content around the questions buyers actually ask, put the answer near the top, then elaborate and go into depth. A well-written FAQ section with matching schema markup is a useful addition as well.
- Build your third-party footprint. Directories, industry round-ups, reviews and independent coverage are the raw material of category answers. Consistent, accurate descriptions of your business across those sources teach the machines who you are.
Different AI engines draw on different sources, so a fix that moves your visibility in one may do little in another. That is not a reason to hold back. It is a reason to treat AEO as steady, cumulative work rather than a single technical fix.
Frequently asked questions about AEO
Short answers to the questions we hear most, from clients and from our search data research.
What does AEO stand for?
AEO stands for answer engine optimisation: the practice of making your content and brand appear in the direct answers given by AI tools such as ChatGPT, Perplexity and Google’s AI Overviews, rather than only in ranked lists of links.
What is the difference between AEO and SEO?
SEO earns your pages a position in a list of search results that the reader chooses from. AEO earns your content a place inside the answer itself. The foundations overlap heavily; the difference is that AEO competes for citation and mention rather than for the click.
What is GEO in marketing?
GEO stands for generative engine optimisation. It covers how generative AI models read, remember and represent your brand in their training and their answers. In day-to-day B2B practice, GEO and AEO overlap enough to be treated as one discipline.
Does AEO replace SEO?
No. AI systems lean on many of the same signals search engines use, so strong SEO is the foundation AEO builds on. A site that abandoned SEO would weaken both. What changes is the goal: from ranking well to being quoted.
What is zero-click search?
A zero-click search is one where the person gets their answer on the results page itself, from a snippet or an AI summary, without visiting any website. It is the behaviour AEO responds to, and our zero-click guide covers it in depth.
How do I get cited by AI tools?
Make your content machine-readable (crawlable, well structured, marked up with schema), answer specific questions directly, include verifiable facts with named sources, and build accurate mentions of your brand across the third-party sources AI draws on.
How do I optimise my content for ChatGPT?
Allow OpenAI’s search crawler in your robots.txt file, keep your content in server-rendered HTML, lead each section with a direct answer, and keep your business details consistent everywhere they appear online. Write content that aligns with real questions your buyers are asking.
Is AEO worth it for small B2B businesses?
Yes, and often more so than for large ones. AI answers favour clear, specific, well-evidenced sources over sheer brand size, so a focused specialist can appear in category answers that larger competitors miss.
How long does AEO take to show results?
Expect months rather than weeks. Technical fixes such as crawler access and schema can register quickly, but building the third-party footprint that feeds category answers is cumulative work, much as building search authority was.
What does an AI readiness check cover?
Ours covers crawler access, page rendering, schema markup, content structure, brand entity consistency, and live tests of what AI tools currently say about your brand, delivered as a one-page report with priorities. It is free to request.
Be contēnt with being the answer
Your buyers now ask machines first and humans second, so your content has to be chosen twice. The firms that win will not be the ones chasing tricks. They will be the ones whose work is clear enough for a machine to quote and good enough for a human to trust.
If you would like to know where you stand today, request a free AI Readiness Check and we will show you.