If you've been looking into digital marketing lately, you've probably encountered these three acronyms — SEO, GEO, and AEO — and wondered what on earth the difference is, and whether you need all of them or just one.
Here's the plain-English breakdown.
SEO — Search Engine Optimisation
What it is: The practice of improving your website's visibility in traditional search engine results — primarily Google's list of blue links.
Where it shows up: The organic results on a Google search page. Position 1 through 10 (and beyond) for a given keyword.
How it works: SEO involves three main pillars — technical (making your site fast, crawlable, and well-structured), content (creating high-quality pages that match what people are searching for), and authority (earning links and mentions from other trusted sites).
Timeline: 3–12 months to see significant results. SEO compounds over time — the longer you invest, the stronger the returns.
Best for: Long-term, sustainable traffic growth. Building an asset that keeps generating value without ongoing ad spend.
GEO — Generative Engine Optimisation
What it is: The practice of optimising your brand and content so that AI tools — ChatGPT, Gemini, Perplexity, Copilot, Claude, and others — mention and recommend you in their responses.
Where it shows up: Inside AI-generated answers. When someone asks an AI assistant "who's a good Google Ads agency in Melbourne?" — GEO is what puts you in the answer.
How it works: AI models cite brands and sources they've encountered frequently, consistently, and authoritatively across their training data. GEO builds that presence through strategic content, off-site mentions, authoritative source building, and entity optimisation.
Timeline: 2–6 months to first measurable AI citations, with continued improvement over time.
Best for: Any business that wants to capture buyers who are using AI assistants to find providers — which is an increasingly large and rapidly growing segment.
AEO — Answer Engine Optimisation
What it is: The practice of structuring your content to be served as a direct answer by search engines — in featured snippets, People Also Ask boxes, AI Overviews, and voice search responses.
Where it shows up: At the very top of Google's search results — above the paid ads and the organic links. In the "People Also Ask" expandable boxes. In Google's AI Overview summaries. In Siri and Google Assistant voice responses.
How it works: AEO requires structuring content around specific questions, providing direct and concise answers, implementing schema markup (structured data that helps Google understand your content), and targeting the exact queries that trigger answer boxes.
Timeline: Faster than traditional SEO — some featured snippet wins can happen within weeks of optimisation. AI Overview citations typically take 1–3 months.
Best for: Businesses that want to capture high-intent, question-based search traffic and appear at the very top of results — even before position one.
How they work together
Here's the key insight: these three disciplines are not alternatives to each other. They're complementary layers of a complete search visibility strategy.
Think of it this way:
- SEO builds the foundation — a technically sound website with authoritative content that earns trust from Google and other search engines
- AEO builds on that foundation to capture the most visible positions in Google's results — the answer boxes and snippets that appear before everything else
- GEO extends that visibility into AI assistants — ensuring that when buyers use ChatGPT, Gemini, or Perplexity instead of (or alongside) Google, your brand appears there too
The content that wins featured snippets (AEO) tends to be the same kind of authoritative, well-structured content that gets cited by AI models (GEO). The domain authority built through SEO provides the credibility signals that help both AEO and GEO. It all feeds together.
Which one does your business need?
Ideally: all three. But if you're starting from scratch with a limited budget, here's a practical prioritisation:
Start with SEO fundamentals. Without a technically sound website and basic content quality, neither AEO nor GEO will perform well. SEO is the foundation everything else builds on.
Layer in AEO early. Many AEO optimisations — FAQ sections, clear question-based headings, schema markup — are relatively low-effort and can show results quickly. Bake them into your content strategy from the start.
Build GEO systematically over time. GEO requires consistent, ongoing effort — content creation, off-site presence building, and entity optimisation. It's a longer game but increasingly important as AI search grows.
Not sure where to start for your specific business? Our free search audit gives you a clear picture of your current visibility across all three channels — and a prioritised roadmap for improvement.
The bottom line
SEO, GEO, and AEO are all answers to the same question: how do you get your business in front of buyers who are actively looking for what you offer?
The difference is where those buyers are looking. Some are searching Google's blue links (SEO). Some are asking AI assistants (GEO). Some are getting answers served directly in search results (AEO).
A complete search strategy covers all three — because your buyers are using all three.