SEO (Search Engine Optimisation) is about ranking well in traditional search results. AEO (Answer Engine Optimisation) is about having your content selected as the direct answer to a specific question. GEO (Generative Engine Optimisation) is about being cited as a source inside AI-generated answers from tools like ChatGPT or Google AI Overviews. They're related disciplines with heavy overlap, not three separate strategies you need to run in parallel.
We field this question constantly because the terminology has moved faster than most agencies' explanations. Here's the quick comparison, followed by the detail.
Why the terminology proliferated so quickly
Three years ago, "SEO" was the only term most businesses needed. The rapid rise of AI-generated answers created a genuine gap in the vocabulary — SEO didn't quite capture what it meant to be selected as a featured answer, or cited inside a synthesised AI response, so new terms emerged to describe these more specific outcomes. The result is a genuinely confusing landscape of overlapping acronyms, made worse by marketing material that sometimes uses these terms interchangeably or inconsistently. Understanding the real distinctions, rather than treating them as marketing buzzwords, is what actually lets you build a coherent strategy instead of chasing three separate trends.
Quick comparison
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank in search results | Be the direct answer to a question | Be cited in an AI-generated response |
| Where it shows up | Google, Bing results pages | Featured snippets, voice assistants | ChatGPT, Perplexity, AI Overviews |
| Core unit | The ranked page | The specific answer | The synthesised response |
| Success metric | Rankings, organic traffic | Snippet ownership | Citation frequency, AI referral traffic |
What is SEO?
SEO is the established practice of improving a page's visibility in traditional search engine results — through keyword targeting, technical health, backlinks, and content quality — so that it ranks higher and earns clicks. It's still the foundation everything else builds on, since AI platforms still rely heavily on crawled, indexed web content.
What is AEO?
AEO narrows the focus to winning the direct answer position — a featured snippet, a "People Also Ask" box, or a voice assistant's spoken response. It rewards content that states an answer clearly and concisely, usually in the first sentence or two of a section, structured so a machine can lift it cleanly without needing to interpret surrounding context.
What is GEO?
GEO is the newest of the three and the broadest in scope. Generative engines don't return a single "answer" pulled from one page — they synthesise a response from multiple sources and decide which ones to cite. GEO is about making your content the kind of source a generative model chooses to draw from and reference: comprehensive, well-corroborated, structurally clear, and backed by consistent authority signals across the web, not just on your own site.
Where they overlap
All three reward genuinely good, clearly structured, accurate content — there's no version of this where thin, vague, or poorly organised content wins under any label. Technical accessibility (crawlable, fast, not blocked) matters to all three. And topical authority — being recognised as a genuine expert on a subject, not just ranking one page for one keyword — increasingly underpins all three as well.
How ranking signals differ
SEO ranking signals lean heavily on backlinks, keyword relevance, and technical performance. AEO leans more on answer clarity and structured markup (schema, clear headings, concise definitions). GEO leans most heavily on cross-web corroboration and comprehensiveness — an AI model is effectively asking "do multiple credible sources agree with this, and does this source cover the topic thoroughly enough to trust?"
A concrete example across all three
Take a specific question like "how much does X service cost." A page optimised purely for SEO might rank well through solid keywords and backlinks, even if the pricing information itself is buried several paragraphs in. Optimising the same page for AEO means restructuring so the actual price range appears in the first sentence under a clearly matching heading, making it easy to lift as a direct answer. Optimising for GEO means going further still — ensuring the figures are specific and genuinely accurate, that similar figures appear consistently across other credible sources discussing the same topic, and that the page covers enough surrounding context (what affects the price, how it compares to alternatives) that a generative model synthesising a fuller answer has reason to draw from and cite it rather than a shallower competing page.
Do businesses need all three?
Practically, yes — but not as three separate campaigns. We treat them as three lenses on the same underlying content strategy. A well-built page targeting a commercial keyword, structured with clear answer-first sections and genuine depth, tends to perform reasonably across all three simultaneously. The businesses that struggle are the ones optimising purely for old-style keyword density without the structural clarity or depth that AEO and GEO reward.
Why treating these as separate campaigns backfires
We occasionally see businesses commission entirely separate "GEO strategies" run independently of their existing SEO work, often at real additional cost. In practice this tends to create duplicated, sometimes conflicting content rather than a stronger overall position, since the underlying content and authority signals that support AEO and GEO visibility are extensions of sound SEO fundamentals rather than a wholly different discipline requiring a separate content library. A more efficient approach almost always builds all three considerations into one content plan from the outset.
Building one integrated search strategy
Our approach with clients is to build content that:
- Targets a real commercial or informational keyword (SEO)
- Answers the core question directly and early, with clean headings mapped to sub-questions (AEO)
- Goes deep enough, and is corroborated widely enough, to be a credible source for a generative model to cite (GEO)
If you want the deeper technical detail on the AI-specific side of this, our guide to AI search optimisation covers the mechanics, and our pieces on ranking in ChatGPT and ranking in Google AI Overviews get specific about platform-level tactics. For the ongoing execution side, our AI SEO and AI content marketing services are built around exactly this integrated approach.
How to explain this to a team or client who's confused
If you need to explain this distinction to a colleague or client without getting lost in acronyms, the simplest framing we've found is this: SEO gets you found, AEO gets you quoted directly, and GEO gets you referenced inside someone else's answer. All three ultimately depend on the same underlying asset — genuinely good, well-structured, trustworthy content — which is why none of them justifies a completely separate content operation from the other two.
Measuring success across all three
Because these three disciplines reward overlapping but distinct outcomes, measurement needs to look slightly different for each. For SEO, standard rankings and organic traffic remain the right metrics. For AEO, tracking featured snippet ownership and "People Also Ask" appearances for your priority queries is the more relevant signal. For GEO, the most direct (if manual) approach is regularly testing your priority queries directly in ChatGPT, Perplexity, and similar tools to check whether your business is mentioned or cited, since comprehensive automated tracking for this is still an emerging space rather than a mature, standardised practice.
FAQs
Is AEO replacing SEO? No — AEO builds on SEO fundamentals rather than replacing them. Strong technical SEO and content quality remain the foundation for winning answer positions.
What is GEO in digital marketing? GEO (Generative Engine Optimisation) is the practice of optimising content and authority signals so that generative AI tools like ChatGPT or Google AI Overviews cite your business as a source in their answers.
Do I need separate SEO and GEO strategies? Not separate strategies — one strong content and authority strategy, built with answer clarity and depth in mind, tends to perform well across SEO, AEO, and GEO simultaneously.
The acronyms will likely keep multiplying as the search landscape evolves further, but the underlying principle is unlikely to change: genuinely useful, clearly structured, well-corroborated content wins across every version of "search" that comes next.
Want to know how your current content stacks up across all three? Book an AI search visibility audit with our team.
