Search is splitting in two. Alongside the classic list of blue links, millions of people now get their answer straight from ChatGPT, Perplexity, Google AI Overviews and Gemini, without clicking anything. If your page is not written in a way those systems can understand and trust, you are invisible in that second channel, no matter how well you rank in the first.
This guide explains how to fix that. It covers what GEO and AEO actually mean, how answer engines decide what to cite, and the concrete changes that make your pages quotable. At the end you can check your own page for free in about thirty seconds.
What is GEO and AEO?
GEO (generative engine optimization) and AEO (answer engine optimization) are two names for the same goal: making your content easy for an AI answer engine to read, trust and quote. Traditional SEO tries to win a ranking position. GEO and AEO try to win a citation inside an AI-generated answer. The two overlap, but they are not identical, and a page can be strong at one and weak at the other.
How do ChatGPT and Perplexity decide what to cite?
Answer engines do not read your page the way a human does. They extract facts, match them to a user's question, and prefer sources they can parse cleanly and trust. In practice they favour pages that:
- State answers directly and early, rather than burying them under introductions.
- Use clear headings, short paragraphs and lists that are easy to lift as a self-contained answer.
- Carry structured data (schema) that tells the machine what the page and its entities are.
- Show trust signals: a named author or organisation, a recent date, and citations of their own.
- Load as real HTML, so a crawler sees the content without running heavy JavaScript.
How do I make a page easy for an AI to quote?
Write for extraction. The single highest-impact habit is to answer the question in the first sentence under a heading, then expand. If someone asks an AI "what is AEO", the model wants one clean sentence it can quote. Give it that, then add the detail.
Practical moves that consistently help:
- Turn key sections into questions your audience actually types, and answer each in one or two tight sentences before elaborating.
- Add a short FAQ section for the common follow-up questions.
- Use ordered steps for how-to content and bullet lists for options, so the answer is liftable.
- Keep one clear idea per paragraph.
What structured data should I add?
Structured data is how you speak to the machine directly. At minimum, most pages should declare who published them and, where relevant, mark up their questions and answers. Pair an FAQPage block with an Organization or Person block so the engine knows who stands behind the page, and an Article block with a published and modified date on editorial pages. Freshness and authorship are trust signals that answer engines weigh heavily.
Should I add an llms.txt file?
Yes, it is a low-effort signal worth having. An llms.txt file at your site root is an emerging convention that points AI crawlers at your most important pages, much like a sitemap does for search engines. It will not make a weak page strong, but on a page that is already well structured it is a helpful nudge.
How is this different from traditional SEO?
Traditional SEO optimises for a ranking algorithm that returns links; GEO and AEO optimise for a language model that returns an answer. Classic ranking factors like backlinks and domain authority still matter for being found, but being cited depends more on structure, clarity, schema and trust. The good news is that most GEO and AEO work also improves classic SEO, so you are rarely trading one for the other.
How do I check my AI-search readiness?
You do not have to guess. Iris, our free AI SEO optimizer, gives every page two scores: a classic SEO health score and a separate AI-search readiness score that measures exactly the signals above, structured data, question-style headings, author and freshness, lists and clarity. It also hands you copy-paste-ready fixes, including the schema you are missing. Paste any URL and you will see where you stand in about thirty seconds, no sign-up needed.
Frequently asked questions
Is GEO the same as SEO? No. SEO aims for a ranking position in a list of links; GEO aims for a citation inside an AI-generated answer. They overlap but reward different things.
Do backlinks still matter for AI search? They help you be discovered and trusted, but citation depends more on how clearly and structurally your page answers the question.
How fast can I improve my AI-search score? Structural fixes like adding schema, question headings and a clear answer up top can be applied in an afternoon and are picked up on the next crawl.