AEO vs SEO: what's the difference and why you need both

SEO (search engine optimisation) helps your content rank in Google and other search engines. AEO (answer engine optimisation) helps your content get cited inside AI-generated answers from tools like ChatGPT, Google's AI Overviews, and Gemini.

SEO and AEO are different disciplines built on the same foundation. SEO earns visibility in search results; AEO earns it in AI answers. As more searches end inside an AI summary, most businesses now need both.

What is the difference between SEO and AEO?

SEO and AEO have different goals, different audiences, and different signals, but they both focus on content quality and technical fundamentals.

SEO has been the backbone of digital marketing for decades. StatCounter's May 2026 data puts Google at 88.02% of the search engine market in Australia. Optimising for Google still matters more than anything else for most Australian businesses.

AEO is newer. It emerged because AI systems do not only match keywords to pages. They read, synthesise, and summarise content from multiple sources.

Being readable by a human is no longer enough. Your content must also be readable by a machine that is trying to write an answer.

What is AEO?

AEO is the practice of structuring your content so that AI-powered engines can understand, extract, and cite it in their answers.

Those engines include Google's AI Overviews, ChatGPT, Gemini, Perplexity, and voice assistants. They work by pulling information from across the web and generating a direct response, often without sending the user to any single website.

Pew Research's 2025 study found that around 18% of all Google searches were already producing an AI summary by March 2025, rising to 53% for searches of ten or more words. If your content is not structured to be cited, it may not appear in those results at all.

AEO focuses on three things:

• Clarity. Content answers a specific question directly and in plain language, so AI engines can extract a clean response without needing to interpret long preambles.
• Structure. Clear headings and formatting make content machine-readable, helping AI systems map sections to specific questions.
• Authority. Your site is recognised as a trustworthy, well-referenced source, which raises your odds of being cited rather than a competitor.

What is SEO?

SEO is the process of improving your website so it ranks higher in search engine results pages and attracts more organic traffic.

It covers three main areas: technical optimisation (crawlability, indexation, and site architecture), on-page optimisation (titles, headings, content), and off-page signals (backlinks, brand mentions). The goal is clicks: getting users to visit your site.

The stakes are high at the top of the results page. When no AI Overview appears, FirstPageSage's 2026 CTR study puts the number one organic result at a 39.8% average click-through rate, with the top three together taking 68.7% of all clicks. When an AI Overview appears above the results, Ahrefs' December 2025 study found clicks to the top-ranking page fall by 58%. This is why checking whether a keyword triggers an AI Overview is now part of proper keyword research: the same number-one ranking is worth far less when an AI summary sits on top of the page.

Strong SEO is not automatic. It requires consistent, deliberate work.

Does AEO replace SEO?

AEO does not replace SEO. It builds on top of it.

AI systems like Google's AI Overviews draw from the same web index that powers traditional search. A page has to be indexed and eligible for Search before it can be cited at all.

Ranking near the top then improves your odds: Ahrefs' 2026 analysis found that 76% of AI Overview citations came from top-ten pages in mid-2025, falling to 38% by early 2026. The remaining citations split almost evenly between positions 11 to 100 (31.2%) and pages ranking beyond position 100 (31.0%).

Many of those lower-ranked citations come from Google's query fan-out, where it breaks your search into sub-queries and cites pages that rank for those instead. Google cites a wider range of pages now, but strong rankings still improve your odds of being retrieved and cited.

SEO gets you into the index and earns you authority. AEO shapes how that authority is read and extracted by AI systems. You need both.

How do zero-click searches change the equation?

Zero-click searches are searches where the user gets their answer directly on the results page and never visits any website. SparkToro's 2026 study found that 68.01% of Google searches ended without a click in early 2026, up from around 45% a decade earlier.

When an AI summary appears, Pew Research found users click through to a traditional search result in only 8% of those visits.

This changes what "winning" looks like in search. A click is no longer the only measure of value.

Being cited in an AI summary, even without a click, builds brand awareness and trust. Users see your name, read your answer, and may search for you directly later.

AEO is how you capture that value. SEO is how you earn the authority to be cited in the first place.

Where do AEO and SEO overlap?

AEO and SEO share four core foundations: high-quality content, technical performance, structured data, and clear question-and-answer formatting.

High-quality, authoritative content

Both disciplines reward content that genuinely answers user questions with accuracy and depth. Thin or low-value pages will not rank in Google and will not be cited by AI engines.

Technical performance

The technical basics that help you rank are the same ones that help you get cited. Three matter most:

• Crawlability and indexation. AI Overviews draw from the same index as regular search, so a page Google cannot crawl or index can neither rank nor be pulled into an AI answer. Being indexable is the minimum requirement for both.
• Site structure and internal linking. A logical structure with clear internal links helps search crawlers and AI systems understand how your pages relate and which one answers a given question.
• Page speed. Genuinely slow pages can hurt rankings, and faster pages tend to earn more AI citations too. Speed is only a minor ranking signal next to content quality. But SE Ranking's 2025 analysis of ChatGPT found pages that start rendering content in under 0.4 seconds average 6.7 citations, against 2.1 for slower ones. That is a correlation, not proof of cause. As a concrete target, Google's Core Web Vitals treat a largest contentful paint of 2.5 seconds or less as good.

Structured data and semantic markup

Schema markup presents structured data that helps search engines and AI systems understand what your page is about. It is useful hygiene, but not a citation lever on its own. Ahrefs' 2026 controlled test of 1,885 pages that added schema found no meaningful lift in AI citations. What wins the featured snippet, the boxed answer Google pulls to the top of some results, is a clear, direct answer in your content, not the markup. FirstPageSage's 2026 data puts that snippet's click-through rate at 42.9%, higher than any standard organic position.

Clear, question-and-answer formatting

Question-based queries are the strongest trigger for AI summaries. Pew Research found that 60% of Google searches starting with "who," "what," "when," or "why" produced an AI summary. Structuring content around real questions, with direct answers near the top of each section, improves SEO performance. It also improves AEO eligibility.

What does AEO look like in practice?

AEO-focused content has four practical characteristics: direct answers first, natural-language headings, concise prose, and entity clarity.

Direct answers first

Place the answer to each question in the first one or two sentences of the section. AI engines extract answers by looking for the most direct, self-contained response to a query.

Pew Research found the typical AI summary in Google is 67 words long. Your answer needs to fit within that window, and still make sense on its own.

Natural-language headings

Frame headings as the questions your audience asks. "What is AEO?" outperforms "Overview of Answer Engine Optimisation" for both AI extraction and search visibility.

Concise, readable prose

Write in plain language, and keep the evidence in. Aim for a Flesch-Kincaid grade of about 8 to 12, which maps to the reading level of roughly a 13- to 18-year-old. That keeps it clear enough for an AI engine to extract and a general audience to follow, while staying detailed enough to read as credible. More technical topics can sit higher.

Plain wording helps, but Aggarwal et al.'s 2024 study found that adding citations and statistics lifts how often content is cited more than simplifying the wording alone. The goal is clarity with substance, not stripping the page back to bare sentences.

Entity clarity

Name your business, location, services, and people explicitly. AI systems work by matching the names in your content to known people, places, and organisations. They need clear signals to confidently connect your content to a specific business or topic. Avoid vague pronouns like "it" or "they" when you mean a specific noun. For example, "RankRise builds Webflow websites and runs SEO and AEO for Australian businesses" gives an AI system a clear entity to attribute, where "we build sites that rank" names nothing specific.

If you use schema at all, entity corroboration is its most plausible use. Linking your official profiles, such as your social accounts, a Wikidata entry, or other pages about you, to your site through schema's sameAs property may help engines work out that those profiles and your website are the same business. The effect is unproven, though, and the stronger driver remains being named and mentioned consistently across the web.

How do you measure AEO success?

AEO success is measured through AI Overview impressions in Search Console, direct queries to AI tools, and branded search volume. These metrics differ from traditional SEO measures but remain fully trackable.

Google has introduced dedicated Search Console reports for generative AI performance, showing how often your pages appear in AI Overviews and AI Mode. For now these reports show impressions only (no clicks, click-through rate, or rankings yet), and they are still rolling out. Those AI impressions also feed into your main Performance totals, so you can track AI visibility as its own view while it still counts toward your overall numbers.

Beyond Search Console, you can:

• Query AI tools directly. Test ChatGPT, Gemini, and Perplexity with your target questions to check whether your brand is cited in their answers.
• Track branded search volume. A rise in branded searches over time suggests your brand is gaining awareness through non-click channels such as AI summaries.
• Monitor Search Console alongside AI Overview data. Pair impressions and average position with AI Overview reports to see how visibility shifts across both surfaces.

Common misconceptions about AEO and SEO

"AEO replaces SEO"

AEO does not replace SEO. AI systems draw from the same index as traditional search, so the pages that rank are the pages most likely to be cited.

Strong SEO still improves your odds of AEO visibility, even though Ahrefs' 2026 analysis found AI Overviews now cite many pages beyond the top ten.

"Schema markup alone is enough for AEO"

Schema markup on its own will not get you cited in AI answers. It has to sit on top of genuinely useful, well-structured content. Structured data helps engines interpret a page, but it cannot make a thin or low-quality page worth citing.

Schema markup's usefulness has been overhyped in AI search. Google removed FAQ rich results entirely as of May 2026, after first restricting them to government and health domains in 2023, and Ahrefs' 2026 controlled test of 1,885 pages found that adding schema does not lift AI citations. The one argument left for the AI side is that Organisation and sameAs markup might help engines confirm your identity, but that is unproven and largely speculative. Where schema is genuinely, provably useful is in ordinary search, not AI: it still powers the rich results that survive, such as product prices, review stars, and breadcrumbs, which affect how your listing looks in Google.

"Zero-click means zero value"

Zero clicks does not mean zero visibility. The search still counts as an impression: the user reads your answer and sees your brand name attached to it, even though they do not click. That exposure builds trust and drives branded searches later. Treating these impressions as worthless ignores a major share of modern search behaviour.

What this means for Australian SMEs

Australian SMEs should start with a fast, well-structured website, then layer on SEO and AEO in that order. If your site is not yet fast and well-structured, that is the first priority, before any advanced AEO work.

Once a solid website exists, AEO becomes relevant quickly. A 2025 national survey reported in The Conversation found that 69.1% of Australians aged 18 to 34 had recently used a generative AI tool. If your customers are in that age group, some of them are already looking for your services through AI tools, not only Google.

StatCounter's May 2026 data still has Google dominating at 88.02% of the Australian search market. SEO remains the foundation. But AEO is the layer that protects your visibility as AI-mediated search becomes a larger share of how customers find information.

The practical priority order for most Australian SMEs:

1. Build or fix the website first. Establish clean structure, fast load times, and mobile-optimised pages before any optimisation work begins.
2. Invest in core SEO. Target keywords with demand, earn authority through links and brand mentions, and fix technical issues across the site.
3. Add AEO on top. Structure content around real questions, implement schema markup, and optimise for entity clarity so AI engines can extract your answers.
4. Measure both surfaces. Track rankings and clicks alongside AI Overview impressions and branded search volume to see the full picture.

Frequently asked questions

What does AEO mean in SEO?

AEO stands for answer engine optimisation. AEO is the practice of structuring content so AI-powered tools can extract and cite it in their answers.

These tools include ChatGPT, Google's AI Overviews, and Gemini. AEO works alongside SEO rather than replacing it.

What is the difference between SEO, AEO, and GEO?

SEO gets your pages ranking in search engines. AEO gets your content cited in AI answers such as Google's AI Overviews. GEO (generative engine optimisation) is the closely related practice of earning citations inside generative AI tools like ChatGPT, Perplexity, and Gemini.

In practice the lines blur, because the same structured, well-sourced content tends to serve all three. AEO and GEO are often used interchangeably, with GEO leaning more toward the chat-based engines.

Can you rank in AI Overviews without ranking in Google?

You can be cited in AI Overviews without ranking near the top, as long as your page is indexed and eligible to appear in Google Search. Ahrefs' 2026 analysis found that about 76% of AI Overview citations came from top-ten pages in mid-2025, falling to 38% by early 2026. Most citations now come from pages ranking lower or outside the top 100. Strong rankings still help, but they are no longer close to a requirement.

Is AEO worth it for a small Australian business?

AEO is worth it once your SEO foundation is solid and your audience uses generative AI tools. A 2025 national survey found that 69.1% of Australians aged 18 to 34 have recently used a generative AI tool. If your target audience is in that bracket, they are already using these tools to find answers.

How is AEO success measured?

AEO success is measured through AI Overview impressions in Google Search Console, direct testing in AI tools, and branded search volume. You can add to this data by testing your brand's presence in ChatGPT, Gemini, and Perplexity directly, and by tracking branded search volume over time.

Do different AI engines cite content differently?

Yes, a little. The fundamentals (clear answers, solid structure, citations, and authority) work across all of them. But each engine has a tilt: some lean toward established, institutional sources, while others favour freshness, so recently updated pages tend to do better. Google's AI Overviews reward the same authority and structured-data signals that help you rank in regular search. You do not need a separate strategy for each engine, but if one matters most to your customers, it is worth learning its preferences.

Do I need to rewrite my existing content for AEO?

Rewriting from scratch is rarely necessary, but targeted edits to your existing content often help. The most effective changes are structural:

• Add a direct answer in the first one or two sentences of each section.
• Frame headings as the questions people ask.
• Make each paragraph self-contained, so it makes sense without the one before it.

Setting up schema markup is a low-effort addition worth doing, though it is the content structure above that does the heavy lifting, not the markup. You should also make sure your business name, location, and services are named clearly rather than implied.

About RankRise

We are a Webflow Certified Partner and have been Webflow-focused since 2020. When SEO and AEO are part of a project, we build them in from the start rather than bolting them on later. For SignLab, a network of sign-language learning sites, our work now drives more than 65,000 monthly organic clicks and 6.6 million monthly impressions across eight markets.

We did this with Webflow CMS, programmatic SEO, and content structured for answer engine visibility. We offer a free consultation to review your site against Google's core ranking signals and AI Overview eligibility criteria.