Three acronyms are being sold hard right now: SEO, AEO and GEO. The pitch usually implies they're three different things, and that you need a new product for each. That's not quite honest. The truth is simpler and cheaper: they're overlapping views of the same job, and most of the work is shared. Here's the plain-English version, with the hype corrected.
What each term actually means
SEO: ranking in search results
Search engine optimisation is the older, familiar one. The goal is to appear high in a list of search results when someone types a query into Google. You win by having a fast, well-structured site with content that genuinely answers what people are looking for, and by being seen as credible. Nothing about that has stopped mattering.
AEO: being the answer
Answer engine optimisation is about being the business an AI assistant names when someone asks it a question, rather than a link on a results page. When a customer asks ChatGPT, Perplexity, or Google's AI answers "who does X in Singapore?", AEO is the work that makes your business the one quoted back. We covered this in detail in how to show up in ChatGPT and AI search.
GEO: a newer label for mostly the same thing
Generative engine optimisation is the newest term. In practice it describes the same goal as AEO: influencing what generative AI tools say about you. Some people use GEO to mean the big AI chat tools specifically and AEO to mean a slightly broader set of answer features, but the distinction is fuzzy and not standardised. For a small business, treating GEO and AEO as the same job will not steer you wrong.
Why they overlap more than they differ
Here's the part the three-acronym pitch tends to skip. The thing that makes you rank well in search is largely the same thing that makes an AI assistant trust and quote you. Both reward:
- ✓Clear, direct content. Content that states the answer plainly, rather than burying it under marketing language, is easier for both a human reader and a machine to use.
- ✓Good structure. Proper headings, real questions with real answers, and a logical layout help search engines and assistants alike understand what your page is about.
- ✓Consistent facts. The same business name, address, services and contact details everywhere online. Conflicting details quietly cost you trust in both worlds.
- ✓Credible mentions. Being referenced on other reputable sites signals you're real and relevant, whether the system deciding is a ranking algorithm or a generative model.
Do that foundation well and you serve all three at once. That's why splitting them into three separate invoices usually benefits the seller more than the buyer.
Two myths worth correcting
Because the field is new and the money is good, some confident-sounding claims are circulating. Two are worth naming, because both are contradicted by Google's own guidance.
Myth 1: "You need structured data to appear in AI answers"
Structured data (schema markup) is genuinely useful. It helps search engines understand your content and can unlock rich results. But per Google's own guidance, structured data is not required to appear in AI Overviews. So if someone is selling you AEO or GEO on the basis that schema is the secret key to AI answers, they're overstating it. Add schema because it's good practice, not because you've been told it's the trick.
Myth 2: "You need an llms.txt file so AI can read your site"
llms.txt is a proposed file some people add to tell AI tools about their site. It sounds official. But Google has said plainly that it does not use llms.txt. There's no harm in having one, but it is not a ranking or visibility lever with Google, and nobody should charge you for it as if it were. Treat anyone selling llms.txt as "the AEO fix" with caution.
What a Singapore SME actually needs in 2026
You don't need three products. You need the fundamentals, done once and done well, then prioritised by where your customers actually search. In rough order:
- ✓Start with where your customers are. If your buyers still Google and compare before enquiring, SEO earns its keep first. If they increasingly ask an assistant for a recommendation, the AEO finish matters more. For most SMEs today it's both, with the balance shifting slowly toward assistants.
- ✓Get the foundation right. A fast, secure, well-structured site with content that clearly answers the real questions customers ask. This is the shared base for all three acronyms.
- ✓Write answer-first. Lead with the plain answer, then explain. Use headings phrased as real questions. This helps you rank and helps assistants quote you.
- ✓Keep your facts consistent. Same name, address and services across your site, your Google Business Profile, and any directory you appear in.
- ✓Earn genuine mentions. Be useful and quotable enough that other credible sites reference you. There's no shortcut worth buying here.
- ✓Add structured data as good hygiene, not as a magic key. It helps machines read you; it is not the gatekeeper to AI answers.
How to sanity-check a proposal
If someone pitches you "AEO" or "GEO" as a separate line item, it's fair to ask three questions. What of this is different from good SEO, specifically? What are you doing beyond clear content, consistent facts and credible mentions? And are you relying on structured data or llms.txt as the mechanism? If the answers are vague, or they lean on the two myths above, you're probably being sold labels rather than work.
The bottom line
SEO, AEO and GEO are three names pointing at one shared job: being clear, trustworthy and well-structured enough that both search engines and AI assistants can find you, understand you, and recommend you. The acronyms will keep changing. The fundamentals won't. Spend your budget on the foundation and on where your customers actually search, and you'll be ready for whatever the next label turns out to be.
Common questions
SEO (search engine optimisation) is about ranking in a list of search results. AEO (answer engine optimisation) is about being the business an AI assistant names when someone asks it a question. GEO (generative engine optimisation) is a newer label that in practice means much the same thing as AEO. They overlap heavily and share the same foundation: clear, well-structured content, consistent business facts, and credible mentions. They're different finishes on one piece of work, not three separate products.
Usually not as a wholly separate product. The work that makes an AI assistant trust and quote you is largely the same work that makes you rank well in search: clear content, good structure, consistent facts, and credible mentions. A good provider does this as one job and tunes it toward both search results and AI answers. Be cautious of anyone splitting it into three invoices or selling a secret trick.
No. Structured data (schema markup) is useful and worth adding as good practice, because it helps search engines understand your content. But per Google's own guidance, it is not required to appear in AI Overviews. If someone is selling you AEO or GEO on the basis that schema is the secret key to AI answers, they're overstating it.
Not with Google. llms.txt is a proposed file some sites add to describe themselves to AI tools, but Google has said it does not use it. There's no harm in having one, but it is not a visibility lever with Google and nobody should charge you for it as if it were. Treat anyone selling llms.txt as 'the AEO fix' with caution.
The fundamentals, prioritised by where your customers search. Get a fast, well-structured, trustworthy site with content that clearly answers real questions. Write answer-first. Keep your business facts consistent everywhere. Earn genuine mentions on reputable sites. Add structured data as hygiene, not as a magic key. If your buyers still Google and compare, SEO earns its keep first; if they increasingly ask an assistant, the AEO finish matters more. For most SMEs today it's both.
Sources
- Google Search Central — structured data is helpful but not required for AI features
- Google Search Central Blog — Google's guidance on AI features and site signals
We build websites and run SEO & AEO for Singapore businesses. HeyAda is a Singapore web studio — design, copywriting, code and SEO, handled end to end. We write these guides to share what actually works, in plain English. If your site isn't getting found, say hi.
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Tell us what you do and who you're trying to reach. We'll look at where your customers search today, how clearly your site answers their questions, and whether search engines and AI assistants can read and trust it. Then we'll tell you honestly what's worth doing first, without the three-acronym upsell.