SEO and AEO: what changed in search?

For years the formula was simple: get onto the first page of Google and the visitors come. By 2026 that formula has broken down, and not because SEO has ended, but because the search engine's output has changed. In a significant share of cases today you don't get ten links, you get a composed answer with a few source citations underneath.

This piece is about the measurable effect of that, what the abbreviation AEO means, and what a small business should actually do about it.

The short version

• AEO (answer engine optimization) means preparing your content so an answer engine can quote and cite it.
• Most searches now end without a click: measurements put the figure between 65 and 75 per cent, depending on the device.
• If an AI summary appears and your page isn't in it as a source, organic click-through drops drastically.
• Most citations come from the beginning of the page. What you don't state in the first third is unlikely to be quoted.
• AEO isn't a replacement for SEO, it builds on it. It needs the same technical foundation with a different content structure.

What exactly changed?

Since 2024 Google has gradually rolled out AI summaries (AI Overviews) and then a standalone conversational search interface (AI Mode). Alongside these came services built on large language models, which many people also use for search.

The scale shows this isn't an experiment: by May 2026 Google AI Mode passed a billion monthly users, and in 2026 ChatGPT crossed 900 million weekly active users.

The practical consequence is zero-click search. According to Similarweb data, the share of searches ending without a click has risen from 56 per cent to 69 per cent since AI summaries were introduced; other measurements put 68 per cent of Google searches in this category. Broken down by device, roughly 65 per cent of searches on desktop and 75 per cent on mobile end without the user clicking through to an external site.

The most important figure, though, is this one: Seer Interactive's analysis of 3,119 informational queries found that when an AI summary appears, the organic click-through rate of brands not cited in it fell by 61 per cent.

That's the sentence that rearranges the thinking.

The question is no longer what position you're in, but whether you get cited.

So what is AEO?

AEO stands for answer engine optimization. It's the work of making sure the answering systems find, understand, trust and cite your content.

You'll also come across the abbreviation GEO (generative engine optimization), which covers essentially the same thing. The terminology hasn't settled yet, but the task is clear.

What matters is what it doesn't mean: it isn't a substitute for SEO. If a page is slow, can't be indexed, or has no substantive content on it, no answer engine will cite it. AEO builds on SEO done properly.

The most important practical rule: the beginning of the page decides

CXL's analysis of a hundred Google AI summary citations found that 55 per cent of the quotes came from the first 30 per cent of the source page.

That means a few concrete things for copywriting:

• Bring the answer forward. The introduction isn't for setting a mood, it's for the answer. If the title is a question, the first paragraph should contain the reply.
• Don't build a dramatic arc. The "I'll reveal it shortly" logic works in video content; in search it doesn't.
• Put a summary at the top. A three- to five-point digest on the first screen serves the reader and the quotability at once.

If you take one thing away from this piece, let it be this.

What does this mean for the structure of the content?

Question-based headings

People type in questions, and answer engines look for replies to questions. If your H2 heading is exactly the question the user asks, with a concise answer directly below it, the system doesn't have to interpret anything: it just lifts it.

The good pattern: a question in the heading, a self-contained two- or three-sentence answer below it, then the detail. The answer has to stand on its own, without context.

A frequently asked questions block

A well-built FAQ section is one of the most effective AEO tools, because it presents information in exactly the form answer engines look for. Use real customer questions rather than invented ones: the emails and calls that come in are the best source.

Structured data

Schema.org markup makes it machine-readable what is what on the page. Three types are enough for most small businesses: Article for the pieces, FAQPage for question-and-answer blocks, and LocalBusiness or Organization for the company details.

It doesn't guarantee a citation, but it reduces the chance of misreading, and that's a cheap gain relative to the effort.

Fact, figure, source

Answer engines favour the verifiable claim. "Market-leading solution" says nothing; "on 1 July 2026 the price of Business Standard rose from 12.50 dollars to 14" can be quoted. Where you can, give specifics and say where they come from.

Consistent company details

If the company name, address, phone number and opening hours differ between the website, the Google profile and the directories, that creates uncertainty. Standardising them is a dull task, but one of the best-returning ones.

What isn't worth doing

Stuffing keywords. It didn't work ten years ago and it doesn't now.

Mass-producing content with AI. The tool is a good assistant, but quickly manufactured text about nothing is rewarded neither by the reader nor by the system. What counts is material with real knowledge or experience in it.

Switching everything to the latest trend. There's a lot of marketing noise around AEO and little evidence about what works over the longer term. The fundamentals, though, are stable: a fast site, a clean structure, real content, accurate details.

And the visitor numbers?

It's worth setting a realistic expectation. If an ever larger share of searches ends without a click, then organic visitor numbers will fall in many areas even if you do everything right.

Which is why it's worth shifting the emphasis from how many come to who comes. A visitor arriving via an answer engine is typically better informed, because their basic questions have already been answered. Fewer arrive, but they're closer to a decision.

Two things are worth measuring alongside visitor numbers: how many take a substantive action on the site (a quote request, a booking, a call), and whether the brand name appears in the answer engines' replies. The latter is simplest to check by hand for now: put the ten most common questions about your own service and see what comes back.

Frequently asked questions

What does the abbreviation AEO mean?

• Answer engine optimization. It's the work of making sure the answering systems, for example Google's AI summaries or search tools built on language models, find, understand and cite your content as a source.

Has SEO ended?

• No. AEO builds on SEO. Without a fast, indexable, well-structured site there's no citation either. The technical foundation has stayed the same; the structure of the content has changed.

How much have clicks from search engines dropped?

• Measurements suggest 65 to 75 per cent of searches end without a click, depending on the device. If an AI summary appears and the page isn't in it as a source, organic click-through can fall by as much as 61 per cent.

What's the first thing to do?

• Bring the answer forward. On every important page, state concisely in the first third what the visitor came for. Most citations come from there.

Does a small business need schema markup?

• It's worth having. Three types are enough in most cases: Article for the pieces, FAQPage for question-and-answer blocks, and LocalBusiness or Organization for the company details.

How can I check whether I'm being cited?

• By hand is simplest: type the most common questions about your service into the search engine and into one or two language models, and see whether your brand name or your page appears in the answer.

In summary

Search hasn't disappeared, it has inserted a layer: today a system reads the results for you and composes the answer. The task has therefore become making sure yours is the content that answer is built from.

The good news is that this doesn't require a new profession. It needs the same things as before, just in a different order: a clear question, a concise answer at the top, verifiable facts, a clean structure and accurate company details.

Sources

• Share and growth of zero-click searches: Similarweb clickstream analysis (2026)
• Effect of AI summaries on organic click-through: Seer Interactive, 3,119 queries, 42 organisations (2026)
• Position of citations within the source page: CXL analysis of 100 AI Overview references (2026)
• Google AI Mode and ChatGPT user numbers: public provider statements (2026)