GEO vs SEO (and AEO, AIO, SXO): what’s the difference?

GEO vs SEO comes down to one distinction: SEO (search engine optimisation) earns your business a place in Google’s list of results, while GEO (generative engine optimisation) earns it a mention inside the answer an AI assistant writes. They share the same foundations but aim for different outcomes. In practice they are two of five overlapping layers (SEO, AEO, GEO, AIO and SXO) that together decide whether customers find you, understand you and choose you. A sixth, AX, is emerging: whether an AI assistant can act for your customer, for example by booking or buying.

Why are there so many names?

Because the way people search has changed faster than the vocabulary. The industry keeps inventing labels for each new place a customer might meet your business: a list of links, a quick answer at the top of Google, a spoken reply, or a recommendation from ChatGPT. The labels overlap, and different agencies use them differently.

The simplest way to think about them is as layers of one job: be found, be understood, be chosen.

What are the five layers?

What is SEO?

SEO is the work that gets your website found, stored and ranked by search engines. Google first has to find your pages (crawling), then store them (indexing), then decide where to show them (ranking). It usually involves:

• a technically sound website that loads quickly and works well on phones (Google measures this with its “Core Web Vitals”);
• useful, in-depth pages on the topics you want to be known for, linked sensibly to each other;
• structured data: a small layer of code that labels facts such as your address, opening hours and prices so machines can read them;
• links from other respected websites;
• evidence of real experience, expertise and trustworthiness, which Google’s guidelines call E-E-A-T.

You measure it with rankings, visits from search and the number of your pages Google has stored, all visible in Google Search Console.

What is AEO?

AEO is about becoming the answer itself, not just a link to it. Google now often shows an answer at the top of the page, either an AI-written summary (AI Overviews) or a highlighted extract from one website (a featured snippet). Voice assistants read out a single answer. AEO shapes your content so you are the one chosen: a clear question, a direct answer in the first sentence, then the detail, plus well-written FAQs and structured data.

Success means appearing in those answers. Some people will read your answer and act on it without ever clicking, so being seen matters as much as the visit.

What is GEO?

GEO is about being named, quoted and recommended by AI assistants such as ChatGPT, Gemini, Perplexity and Claude. Assistants build their answers from sources they can find and trust, so GEO focuses on giving them something worth quoting:

• original information: your own figures, prices, processes and examples that no competitor could copy;
• expert views from named, real people;
• statistics with a clear source;
• the same business details and description everywhere you appear online;
• mentions of your business on other trusted websites, such as local news, directories and industry roundups;
• information that is kept up to date and clearly organised.

You measure it by asking the assistants the questions your customers ask and recording whether you are mentioned, what is said and which sources are quoted.

What is AIO?

AIO (AI optimisation) is the groundwork that lets AI understand your business accurately. To AI, your business is an “entity”: a distinct thing with a name, a location, a founder, services and relationships. If those facts are scattered or inconsistent, AI may describe you wrongly or mix you up with a similarly named business. AIO covers:

• consistent name, address, phone number and description on every site and profile;
• structured data that connects your website, your people and your profiles;
• signals that feed the large public databases of facts search engines use, known as knowledge graphs;
• content written so machines can read it: plain text rather than words inside images, and transcripts for videos;
• keeping information fresh.

Success means AI recognises you as a distinct business and gets the facts right. (Confusingly, “AIO” is also sometimes used as short for Google’s AI Overviews.)

What is SXO?

SXO (search experience optimisation) is what happens after someone arrives. Being found is wasted if the website is slow, confusing or unconvincing. SXO covers the user experience (UX): easy navigation, readable pages, fast loading on phones, clear next steps such as “Book now” or “Get a quote”, and trust signals such as reviews, real contact details and the people behind the business.

This layer is measured in enquiries, bookings and sales. It is also where UX Caribbean started: good experience design is what turns visibility into customers.

What is AX, the emerging layer?

AX (agent experience) is how easy it is for an AI assistant to complete a task for your customer: check a price, find a free slot, make a booking or place an order, sometimes without the customer ever visiting your website. OpenAI, Google and the major payment companies have been building this since 2025, starting in the United States. In short:

• prices, availability and terms written as plain text, not images or PDFs;
• clearly labelled buttons and forms, which also makes the site more accessible;
• short, simple steps to book or buy;
• accurate listings on the booking and payment platforms assistants connect to;
• a person approving anything that commits money or time.

Most of this is good UX with a second user in mind. We explain it fully, with an eight-question readiness check, in From UX to AX.

How do the layers fit together?

Each layer depends on the ones beneath it. AI assistants often draw on what search engines have found and stored, so weak SEO undermines GEO. A clear answer (AEO) only helps if AI trusts who is giving it (AIO). And none of it pays off without a good experience at the end (SXO), for people and, increasingly, for the assistants acting for them (AX).

In our experience, what weighs most in whether AI recommends a business is not on its website at all: consistent details and positive mentions across other trusted sources. Clearly organised information on your own site comes next. Structured data is necessary groundwork, but it is not the main lever.

Is SEO dead?

No. According to BrightEdge, traditional search still sends far more visitors to websites than AI assistants do. But visits from AI platforms grew by about 73% in less than a year, and ChatGPT alone sent 95.1% of them in August 2026. SEO is still the foundation; it is no longer the whole job.

What should a Caribbean business do?

Work through the layers in order, starting with what already exists:

1. See where you stand. Check what Google shows and what AI assistants say when customers ask about your type of business.
2. Write down what you know. Your services, prices, policies and the answers your team gives every day, in one checked place. That becomes the source for every layer.
3. Make it visible. Fix your website, structured data and listings; publish clear answers; earn reviews and mentions.
4. Keep it current. Recheck regularly, because AI answers change.

The opportunity is real. When we checked everyday Caribbean questions in September 2026, only one of 23 sources assistants relied on was a business’s own website. Most businesses are being described by someone else.

These four steps are how UX Caribbean works, starting with the AI Visibility Audit, which checks every layer and produces an AI Readiness Report.

Sources

• BrightEdge, ChatGPT Referral Traffic More Than Doubles in 2026, press release, 24 September 2026. BrightEdge sells AI search tracking software.
• Google Search Central, Creating helpful, reliable, people-first content (the source of E-E-A-T).
• UX Caribbean, The Button Didn’t Die. It Moved., September 2026.
• Mathias Biilmann, Introducing AX: Why Agent Experience Matters, 28 January 2025 (origin of the term AX).