Someone tells you your business needs GEO. Someone else says AEO. A third person is selling AIO. You nod politely and wonder if they’re talking about SEO or a vitamin supplement.

The short answer: AIO, GEO, AEO, AI SEO, AISO and LLMO are different names for roughly the same thing. They all mean getting your business found in AI answers, like ChatGPT, Gemini and Google’s AI Overviews. The names differ. The work is mostly the same. Here’s what each one means, and whether you need any of it.

What do AIO, GEO and AEO stand for?

They’re all labels for making your business easier for AI search tools to find, understand and mention. Six names for one idea. The SEO industry does love an acronym.

Name	Stands for	In plain English
AIO	AI search optimisation	Getting found in AI answers. It’s what we call it at BW Digital.
GEO	Generative engine optimisation	Getting cited by tools that write answers, like ChatGPT.
AEO	Answer engine optimisation	Being the direct answer to someone’s question.
AI SEO	AI search engine optimisation	Same goal. Careful: some people use it to mean using AI to do SEO.
AISO	AI search optimisation	Another spelling of AIO.
LLMO	Large language model optimisation	Named after the technology behind AI assistants.

What is AIO in digital marketing?

AIO usually means AI search optimisation: making your business easy for AI tools to understand and recommend. You’ll sometimes see it written as “AI optimisation”.

It covers the big AI assistants, like ChatGPT, Gemini, Perplexity, Claude and Microsoft Copilot. It also covers the AI answers at the top of Google.

What is GEO in SEO?

GEO stands for generative engine optimisation. “Generative” means the tool writes (generates) an answer, rather than just listing links.

So GEO is about getting your business mentioned or cited in those written answers. It’s the most popular name in the industry right now, which is why you’ll hear it a lot.

(No, it has nothing to do with geography. Although for local businesses, location does still matter.)

What is AEO?

AEO stands for answer engine optimisation. It’s about shaping your content so a search tool can lift it as a direct answer.

AEO has been around longer than the others. It started with Google’s featured snippets and voice assistants, and now applies to AI answers too.

In practice, it means clear questions as headings, with a short, direct answer straight underneath. Like this post.

What about AI SEO, AISO and LLMO?

AI SEO is the trickiest, because it has two meanings. Some agencies use it to mean getting found in AI answers. Others use it to mean using AI tools to do SEO work faster. Always ask which one you’re being sold.

AISO is simply another way of writing AI search optimisation.

LLMO means large language model optimisation. A large language model (LLM) is the technology that powers AI assistants. It’s the most technical-sounding name, but the work is the same.

We explain the whole idea in more depth in What Is AI SEO?

So what’s actually the difference between them?

Very little, in practice. Each name puts the spotlight on a slightly different angle, but the work underneath is largely the same.

• AEO leans towards short, direct answers.
• GEO leans towards being cited in longer AI-written answers.
• AIO, AISO, AI SEO and LLMO are broader umbrella names.

If two agencies offer you “GEO” and “AIO”, they’re very likely offering the same kind of work with different labels. Compare what they’ll actually do, not what they call it.

GEO vs SEO: is it different from normal SEO?

It builds on SEO rather than replacing it. Google says its usual SEO best practices still apply to AI Overviews and AI Mode.

The foundations are the same: a website search engines can reach, clear pages, useful content and a good reputation online.

What AI search adds is a stronger focus on clarity and consistency. AI tools piece together a picture of your business from many places, so your details and services need to match everywhere.

Think of SEO as building the house, and AIO as making sure the address is on every map.

What does the work actually involve?

Whatever it’s called, good AI search work usually includes:

• checking AI tools are allowed to read your website
• making sure your services, location and expertise are crystal clear
• keeping your business details consistent across the web
• writing answer-first content around real customer questions
• adding structured data (labels that tell search engines what’s on a page)
• getting listed where AI tools look, like Google, Bing and Apple
• checking each month whether AI tools mention you, and who they mention instead

Nobody can promise you’ll appear in AI answers. AI platforms decide what to show. A good provider improves your chances and reports honestly on what changes.

Do you need AIO, GEO or AEO?

If your customers use AI tools to find businesses like yours, it’s worth paying attention. For most small businesses, it starts with strong SEO foundations and clear information, which help with both.

You probably don’t need a big, separate AI campaign straight away. A good first step is to check how AI tools currently describe your business, and fix anything that’s unclear or wrong.

Try it now. Ask ChatGPT or Gemini: “Who are the best [your service] businesses in [your town]?” Then see who comes up.

Next week, we’ll cover how to get your business on ChatGPT step by step. [Link once live.]

FAQs

Is AIO the same as GEO?

Mostly, yes. Both mean getting your business found and mentioned in AI-generated answers. GEO is just the more common industry name.

Is AEO still relevant?

Yes. Clear questions with short, direct answers help Google, AI tools and readers alike.

Does GEO replace SEO?

No. AI search relies on many of the same foundations as normal SEO, so you need both working together.

Can anyone guarantee my business will appear in ChatGPT?

No. AI platforms decide which businesses to mention, and nobody outside them controls that.

How long does AIO take to work?

There’s no fixed timeline. Some fixes, like unblocking AI crawlers or correcting business details, are quick. Building a trusted reputation takes longer.

Want to know how AI sees your business?

Our free homepage audit checks how clearly your website explains your business to Google and AI tools. You’ll get plain-English fixes, back within 1–2 working days.

Get my free homepage audit · or see our AI search optimisation service