SEO Fundamentals Guide
What Are GEO and AEO (and How They Relate to SEO)?
As search splits between Google and AI answers, a pile of new acronyms showed up: GEO, AEO, LLMO, AIO. Most describe the same shift. Here’s what each means, how they relate to SEO, and why Google itself calls them “still SEO.”
By Rahul Saini, Author at Search Counsel Co. Last updated [July] 2026.
Featured answer: what are GEO and AEO?
GEO (generative engine optimisation) is the practice of getting your content cited and your brand recommended by AI tools like ChatGPT, Perplexity, and Gemini. AEO (answer engine optimisation) is structuring content so it’s extracted as a direct answer, in featured snippets, voice results, and AI Overviews. Both build on SEO rather than replacing it, and the terms are often used interchangeably.
SEO
Rank pages
Earn visibility in the traditional list of links, for clicks.
AEO
Win the answer
Get extracted as the direct answer in snippets and AI Overviews.
GEO
Get cited
Become a source AI tools reference and recommend.
The truth
Still SEO
Same foundation, new surfaces. Google itself frames them this way.
For two decades, “getting found” meant ranking on Google. Now people also ask ChatGPT, Perplexity, and Gemini, and Google answers many queries itself with an AI Overview. That shift spawned new labels for optimising toward these surfaces, and the labels aren’t settled: GEO, AEO, LLMO, AIO, and “AI SEO” all get used, often for the same work. This guide cuts through the acronym soup, explains what each genuinely means, and shows how they sit on top of the SEO you already know.
Jump to what you need
Article note: This is the beginner-level definition. The definitive taxonomy, and the argument over which label is doing what, is set out in SEO vs GEO vs AEO vs LLMO. The terminology is genuinely unsettled across the industry, so this guide favours clarity over declaring one label the winner.
1) The acronym soup, sorted
Start by lowering the stakes: as of 2026, there’s no agreed-on academic definition separating these terms, and practitioners use them interchangeably all the time. Surveys have found that fewer than a third of SEO commentators keep their terminology consistent across a single year. So don’t get hung up on the labels. Here’s the practical breakdown:
- GEO (generative engine optimisation), getting cited or recommended by generative AI (ChatGPT, Perplexity, Gemini, Claude).
- AEO (answer engine optimisation), structuring content to be pulled as a direct answer (featured snippets, voice, AI answer boxes).
- LLMO / AIO / AI SEO, other names for roughly the same thing, optimising for large language models and AI-driven results.
The useful mental model: SEO works at the page level (rank this page), AEO at the answer level (win this snippet or answer box), and GEO at the brand or entity level (be a source AI trusts across a topic). They’re layers, not rivals.
2) SEO vs AEO vs GEO
The distinction that actually matters, on one screen:
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank in search results | Be the extracted answer | Be cited by AI |
| Surface | Google, Bing | Snippets, voice, AI Overviews | ChatGPT, Perplexity, Gemini |
| Level | The page | The passage or answer | The brand or entity |
| Success metric | Rankings and clicks | Answer placement | Citation and mention share |
3) What is AEO?
Answer engine optimisation is about making your content easy to extract as a direct answer. When a searcher asks a question, AEO-friendly content gets pulled into the featured snippet, the voice-assistant reply, or the AI answer box, often without the user clicking through. The tactics are concrete: lead with a clear, self-contained answer in the first sentence or two under a question-style heading, use plain semantic structure, and add schema so machines can parse it.
The payoff of AEO is exposure and authority even without the click. If your brand is the source of the answer someone hears or reads, you gain trust and recognition, and some of those users click through for the detail. This is the same answer-first craft that carries across every AI surface.
4) What is GEO?
Generative engine optimisation is about influencing what AI tools say and cite when someone asks about your category. Generative engines don’t return a list of links; they synthesise an answer from multiple sources and reference a few. GEO is the work of becoming one of those trusted sources, and it operates more at the brand level than the page level.
What moves the needle for GEO is consistent, verifiable authority: clear entity information about your brand across the web, original data and statistics worth citing, and a presence on the third-party sources AI leans on (industry sites, Reddit, and similar communities). One widely cited study found that adding citations, statistics, and quotations can meaningfully lift how often content appears in AI answers.
5) How they relate to SEO
Here’s the reassuring part: GEO and AEO don’t replace SEO, they extend it. They rely on the same foundations, a crawlable site, trustworthy content, clear structure, real authority. In fact, Google’s own guidance on optimising for its AI features frames AEO and GEO as “still SEO,” and studies keep finding heavy overlap between what ranks in Google and what AI cites. A large share of AI Overview citations also rank in the traditional top results, so strong SEO is often the single best predictor of AI visibility.
The honest take: the labels are mostly new packaging on a consistent body of work. Don’t respond to GEO by publishing 100 thin articles, that has little effect on AI engines. Ten well-structured, entity-rich, genuinely authoritative pieces beat a hundred keyword-stuffed ones every time. Get the SEO foundation right, then add answer-first structure and off-site authority on top.
6) Do you need all three?
For most businesses in 2026, yes, but at different depths. SEO stays foundational, because a page that can’t be found or trusted can’t rank or be cited. AEO ensures your content can be surfaced as a direct answer. GEO ensures your brand is recognised and recommended by AI systems. The strongest programmes practise all three together rather than choosing between them, and the good news is the skills transfer, the schema, answer-first writing, and off-site authority work apply across all of them.
7) How measuring differs
The biggest practical change is measurement. Traditional SEO tracks rankings and clicks. AEO and GEO can’t rely on those alone, because a citation in an AI answer may drive brand awareness without a click, and referral traffic from AI tools is often small even when citations are frequent. So AI-era measurement adds new metrics: how often you’re cited, your share of voice inside AI answers, and how those answers frame your brand. Setting that up is its own discipline, covered in tracking AI visibility.
How we approach it: at Search Counsel Co. we treat GEO and AEO as an extension of clean SEO, not a separate budget line, get the fundamentals right, structure content to answer first, then build the entity authority that makes AI trust you. The full playbook is in the AI SEO hub, and if you’d rather hand it off, see our AI SEO and GEO services.
8) Sources used for this guide
| Source | What it supports |
|---|---|
| Google Search Central, “Optimizing your website for generative AI features” | Google framing AEO and GEO as “still SEO”; that AI features build on the same foundations. |
| Wikipedia and EMARKETER (2026) | No consensus definition separating the terms; GEO, AEO, LLMO, AIO used interchangeably; unstable, per-platform citation behaviour. |
| Princeton GEO research; Semrush AI-citation analyses | Citations, statistics, and quotations lift AI visibility; heavy overlap between top rankings and AI citations. |
FAQ: GEO and AEO
What is the difference between GEO and AEO?
GEO (generative engine optimisation) is about being cited and recommended by generative AI tools like ChatGPT and Perplexity, and works at the brand level. AEO (answer engine optimisation) is about being extracted as a direct answer in features like featured snippets, voice results, and AI Overviews, and works at the answer level. They overlap heavily and share the same answer-first foundation.
Is GEO replacing SEO?
No. GEO extends SEO rather than replacing it. Generative engines rely on the same authority and relevance signals as traditional search, and a page that isn’t crawlable or trustworthy can’t be cited any more than it can rank. Google itself frames GEO and AEO as still SEO. Keep the fundamentals and add the AI layer on top.
What does GEO stand for?
GEO stands for generative engine optimisation, the practice of structuring content and managing your online presence so AI systems cite, mention, or recommend your brand. It’s distinct from geography, despite the acronym. Related terms include AEO, LLMO, AIO, and AI SEO, which practitioners often use for overlapping work.
How do I optimise for AI Overviews and ChatGPT?
Start with solid SEO so your content is crawlable and trustworthy, then add answer-first structure (a clear answer in the first line under question-style headings), specific and verifiable facts, schema markup, and consistent brand information across the web. Building mentions on trusted third-party sources also helps, since AI leans on outside corroboration.
Do GEO and AEO use different tactics from SEO?
They share most tactics and add a few. The shared base is technical health, quality content, and authority. The additions are answer-first formatting, entity consistency, and earning citations across third-party sources. Because the foundation is the same, doing SEO well is usually the fastest route to AEO and GEO visibility too.
How do you measure GEO and AEO?
Not with rankings and clicks alone. You track how often your brand is cited in AI answers, your share of voice inside those answers, and how the AI frames you, since a citation can build awareness without sending a click. Referral traffic from AI tools is often small even when citations are frequent, so visibility matters more than clicks here.
Conclusion: new surfaces, same foundation
GEO and AEO aren’t a reason to throw out SEO, they’re what SEO becomes when the “engine” you’re optimising for is also ChatGPT, Perplexity, and Google’s AI Overviews. AEO wins you the direct answer, GEO makes you a trusted AI source, and SEO remains the foundation both stand on. Ignore the acronym turf wars, get the fundamentals right, structure your content to answer clearly, and build real authority off-site.
Go deeper with how AI search works and the full AI SEO hub, or step back to the what is SEO guide.
Editorial note: This guide is general SEO education. GEO and AEO are new and fast-moving, the terminology is unsettled across the industry, and the figures come from secondary studies that often disagree. Verify current details before relying on them for a specific project.