What Is AEO and Does a Small Site Need It?

The short answer, and what the term covers

Two questions get tangled together in every pitch. Is the thing real, and is the work different? Answer engines are real. People do ask ChatGPT and Claude the questions they used to type into Google, and some of those answers name sources. The work, for a small site, is mostly not different, and the gap between those two facts is where the invoices live.

The term also travels under aliases. GEO (generative engine optimization), LLMO, AI SEO, LLM SEO, answer engine optimization. Different vendors, same bundle. If a proposal uses three of them interchangeably in four pages, that is a fair signal about how settled the field is.

One real difference is worth naming up front. The outcome being sold is not a position on a results page, it is being the source an answer quotes. Those are different things to aim at, and the second one is harder to count. I wrote about the mechanics of earning a citation in how to get your site mentioned by ChatGPT and Claude. This post is the prior question: what the label covers, and whether a site your size should spend anything on it.

The four things people mean by AEO

Separating the bundle is the whole trick, because the four parts have wildly different prices and wildly different evidence behind them.

1. How a page is written. Cheapest, and the part with the clearest reasoning behind it. An answer engine reuses a passage, not a site, so a page that states its answer plainly in a sentence that survives being lifted out of context has a better chance of being the lifted sentence. No tool required. This is editing.

2. Structured data. Cheap to add, and genuinely contested. Google's documentation says plainly that no special markup is needed for its AI features. Microsoft's published guidance for Bing is friendlier to it, describing schema as a way to label content so machines can read it with more confidence. Glenn Gabe keeps a running collection of what each company has actually said, which is the fastest way to check a vendor's claim against the source. Both positions can hold at once: schema does not hurt, and it is not the lever anyone is implying.

3. Which crawlers you allow. Free, binary, and the only one with a real downside if you get it wrong. A robots.txt line written by someone being careful about AI training can quietly remove you from the pool of citable pages. Worth ten minutes.

4. Monitoring and brand presence. The expensive one. A tool runs a set of prompts against the assistants on a schedule and reports whether your brand turns up. That is measurement, and it is a legitimate product. It is also the part most small sites are being sold first, before they have enough pages for the measurement to move.

What the search companies say, and why that is not the whole answer

Google publishes its position in the Search developer docs, and it is unusually blunt. The page on AI features and your website states that there are "no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary," and separately that you do not need to create new machine readable files, AI text files, or markup to appear in them. Eligibility is described in one line: the page has to be indexed and eligible to show in Search with a snippet.

Google staff have said the same thing less formally for over a year. Gary Illyes told a Search Central Live audience that normal SEO practices are what get content into AI Overviews, and that GEO and LLMO are not needed, as reported by Search Engine Roundtable in July 2025. Danny Sullivan has been saying a version of it at conferences since.

Two caveats keep that from settling the matter. The first is interest. Google benefits from people not reorganising the web around a new standard it did not write, so the statement is self-serving even where it is accurate. The second is scope, and it matters more. That documentation covers AI Overviews and AI Mode. ChatGPT, Claude and Perplexity run their own retrieval, and none of them has published anything comparable. So "nothing new is required" is documented for one surface and an educated guess for the rest.

The traffic at stake is smaller than the pitch

This is the number that should set your budget, and it is the number least often quoted in a proposal.

Semrush looked at 19 large retailers between 1 November 2025 and 9 January 2026 and found AI referrals made up about 0.15% of total traffic: 8.87 million AI referral visits against 1.055 billion from organic search (Semrush, January 2026). Ahrefs puts the figure for the web generally at 0.28% of total traffic in March 2026, drawn from referral tracking across 74,752 websites (Ahrefs, May 2026). Read that second one with some care, as the article does not document how the underlying tracker collects its data.

Both numbers exclude the thing that is probably larger. A click from a Google AI Overview arrives in your analytics as organic search, so it is counted in the big number, not the small one. The honest summary is that direct referrals from assistants are a rounding error for most sites today, the trend is up, and the share hidden inside organic is unmeasurable from the outside.

Conversion is where the pitch usually goes next, and where I would hold on tight to my wallet. The published multiples range from modest to absurd, they come from different samples with different baselines, and almost none of them document a method. Ahrefs reports that on its own site AI search visitors were 0.5% of visitors and 12.1% of signups, which is a striking ratio and also one company's funnel. Treat the direction as plausible and the multiple as unknown.

What that means in practice: a site getting 2,000 visits a month is arguing over a handful of sessions. Spending an afternoon is sensible because the afternoon is cheap and the trend points one way. Spending a monthly fee is not, because there is nothing for the fee to move yet.

The part that is just SEO with a new name

Run down the checklist any AEO vendor will hand you and most lines are things that were on the list in 2015.

The page has to be indexed. Crawling has to be allowed, by robots.txt and by whatever protection sits in front of your host. Important content has to exist as text rather than inside an image or rendered by JavaScript after load. Pages need internal links so they can be found. Titles should match the question a person actually asks. Claims should be specific enough to be worth repeating. The site should load.

None of that is new, and all of it is the real work. If a small site is invisible to assistants, the cause is almost always on this list rather than on the exotic one. The beginner SEO guide covers the same ground for human search, which is the point.

The part that is actually different

There is a genuine difference, and it is narrower than the term implies. Search sends people to a page. An answer engine takes a piece of a page and puts it inside something it wrote. The unit that gets reused is a passage, and passages get separated from the page they came from.

Two habits follow from that. Write the answer to the question your page is named after in the page, early, in a sentence that still makes sense with everything around it deleted. And be the only page that states a specific value. "Setup usually takes a while" never gets quoted. "Pointing a Namecheap domain at Netlify took me nine minutes, most of it waiting for DNS" might.

That is a writing habit, not a technology. It costs nothing, it makes the page better for people too, and it is roughly the whole of what AEO adds on top of competent SEO for a site with twenty pages.

Who actually needs to care right now

The answer depends on what your site is for, and the generic advice is generic because it ignores that.

Local service businesses. Mostly yes, but not through AEO as sold. Assistants answering local questions lean heavily on your business profile, your reviews and whether your name, address and phone number agree across the places that list you. Fix those three before reading another word about prompts.

Content and information sites. Yes, and you have the most at stake, because you are the thing being quoted and the click is what you sell. This is where the writing habits pay.

Online stores. Partly. Product data quality, feeds and stock accuracy do more for you than page prose, because shopping answers are assembled from structured product information.

Software or a service sold to businesses. Yes. Comparison and alternative questions get asked of assistants constantly, and the pages that answer them honestly, with real detail about who the product is wrong for, are the ones that get used.

Sites that launched last week with four pages. No. You have nothing to optimize yet. Write the pages. A site with no content cannot be the source of an answer, and traffic to a new site comes from somewhere else entirely in month one.

What a tool or a retainer actually buys

Worth being clear about what is on sale, because the category name suggests something that is not for sale.

Monitoring tools are real. They run a prompt set against several assistants on a schedule and tell you how often your brand or page appears, which you cannot see any other way. Useful once you have enough pages and enough queries for the answer to change.

What is not on sale is placement. There is no submission, no index to enter, no paid slot inside an answer. Any proposal promising citations needs a mechanism attached, and the mechanisms available are the ones in this post, all of which you can do yourself.

One test before paying anyone: can you state your current number? If you do not know how many assistant referrals you got last month, or which questions you want to be the answer to, a tool will hand you a dashboard you have no use for. Spend a month getting the baseline yourself, then decide.

What to do this week if you have a small site

Four items, in order, and the whole thing fits in an afternoon.

Start with robots.txt and indexing, about twenty minutes. Confirm your pages are in Google and that nothing in robots.txt blocks the crawlers you want reading you. This is the one item with a real failure mode, and it is silent.

Then pick five questions, about an hour. Write down the five things a customer actually asks before buying from you. Check that a page on your site answers each one, by name, in its first fifty words. Most sites fail this, and fixing it helps human visitors more than it helps any assistant.

Add a real FAQ next, half an hour per page that needs one. Not three questions nobody asked with one-line answers. Questions you get asked, with answers long enough to stand alone when separated from the page.

Then stop, and set a reminder for ninety days out. Check your analytics for referrals from the assistant domains, and see whether the share has moved for you specifically. That number decides whether any of this deserves more of your time, and it beats every opinion in every article, including this one.

Skip the llms.txt file for now unless you enjoy it. Google's documentation says plainly that no new machine readable file is needed for its features, and no other assistant has committed to reading one (Google Search Central). The site this post sits on has one, because it costs nothing to generate, which is a very different argument from it working.

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My guess is that AEO stops being a separate word within a couple of years, the way "mobile optimization" did once every site was built for a phone by default. The useful parts get absorbed into how people write pages, and the label stops carrying a price tag.

Until then the practical reading is this: the free version of AEO captures most of the available value for a small site, it takes one afternoon, and the honest reason to do it now is that the work makes your pages clearer for people as a side effect. If someone is quoting you a monthly fee for it, ask them which of the four activities above they are performing, and what number they expect to move.

Common questions

Is AEO different from SEO?

Mostly not. Google's Search documentation states that no additional requirements or special optimizations are needed to appear in AI Overviews or AI Mode, and that no new markup or machine readable files are required. The real difference is narrow: answer engines reuse a passage rather than sending a visitor to a page, so stating your answer plainly and early, in a sentence that survives being lifted out of context, matters more than it used to. Everything else on a typical AEO checklist is standard technical SEO and content work.

Do I need to hire an AEO agency for a small business site?

Almost certainly not yet. Three of the four activities bundled under AEO cost nothing and take an afternoon: checking that your pages are indexed and crawlable, writing direct answers to the questions customers actually ask, and adding a genuine FAQ. The fourth, monitoring whether assistants mention your brand, is a real product, but it only earns its fee once you have enough pages and enough queries for the measurement to change. Get a baseline yourself for a month first.

Does adding FAQ schema get me into AI answers?

Not on its own. Google's documentation says there is no special schema.org structured data needed to appear in its AI features, while Microsoft's guidance for Bing treats schema more positively as a way to label content for machines. Both positions fit the same practical conclusion: adding schema is cheap and does not hurt, but it is not the lever. A page that answers the question clearly in text will be quoted whether or not it carries markup, and markup will not rescue a page that does not answer anything.

How much traffic actually comes from AI assistants right now?

Less than the marketing suggests. Semrush measured AI referrals at about 0.15% of total traffic across 19 large retailers between November 2025 and January 2026, and Ahrefs reports 0.28% of total web traffic in March 2026 from tracking across 74,752 sites. Both exclude clicks from Google AI Overviews, which arrive labelled as organic search, so the true figure is higher and not directly measurable. The trend is upward, but for most small sites this is still a few sessions a month.

How do I know if AI assistants are sending me any traffic?

Look at referral sources in your analytics for the assistant domains, chatgpt.com, perplexity.ai, claude.ai, copilot.microsoft.com and gemini.google.com among them. Those are direct clicks on citations. Clicks from Google AI Overviews are not separated out and appear as organic search, so you cannot isolate them. Checking your server or host logs for the named AI crawler user agents tells you a different and also useful thing: whether the crawlers are reaching your pages at all.