AEO vs SEO: what are the differences in 2026?

For twenty years, being visible online came down to one thing: ranking well in Google. Today, a growing share of your customers no longer clicks on links. They ask a question to ChatGPT, Gemini or Perplexity, and read a written answer, with a few sources cited. Google itself displays its AI Overviews above the classic results.

SEO is not disappearing, but it is no longer enough. A new field is opening up alongside it: AEO, Answer Engine Optimization. Here is how these two disciplines differ in practice, and why you need to run them together.

SEO and AEO do not aim for the same thing

The difference fits in one sentence: SEO optimizes for a search engine, AEO optimizes for an answer engine.

A search engine like Google returns a ranked list of links. Your goal is to appear as high as possible to capture the click. All of SEO revolves around this logic: keywords, position, organic traffic.

An answer engine like ChatGPT or Perplexity does not rank links: it writes a synthesis and cites the few sources that helped it build the answer. Your goal is no longer to be first, but to be a source deemed reliable and citable. The question shifts from "am I well positioned?" to "am I cited in the answer?".

These are two different visibility surfaces, with two ways of reaching them.

What actually changes

Several things shift when you move from SEO to AEO.

The format of queries. In SEO, users type short keywords ("seo agency brussels"). Facing an AI, they ask complete, contextualized questions ("which seo agency should I choose in Brussels for an e-commerce site?"). Queries are longer, more conversational, often more precise.

The format of the answer. In SEO, the user lands on your page and reads your content. In AEO, they read a synthetic answer where your brand appears, or not. The content must therefore be easily extractable: a question, a clear answer, a clean structure.

The metrics. This is the most telling change. In SEO, you track average position, the number of keywords in the top 10, organic traffic. In AEO, the key metric becomes the citation rate: across a given set of questions, how often is your brand cited by ChatGPT, Gemini, Perplexity or in the AI Overviews, and with what wording. Position on one side, presence in the answer on the other.

What does NOT change

Good news: the foundations are largely shared. What builds good search rankings also builds good AI visibility.

• Quality content. A clear, factual and up-to-date text performs in Google and gets cited by the models. Hollow marketing convinces neither.
• Authority. The E-E-A-T principles (experience, expertise, authoritativeness, trust) remain the bedrock. A model more readily cites a recognized and consistent brand, exactly as Google ranks it higher.
• Structured data. Clean markup, a readable architecture and fast-loading pages help Google's crawler as much as the bot that feeds an AI answer.
• Factual, verifiable data. Sourced figures, definitions, comparisons: what reassures Google also reassures the model.

In other words, AEO is not a replacement for SEO. It is its extension onto a new channel.

How to steer both together

The real risk is not picking the wrong side, it is treating SEO and AEO as two separate worlds, with two tools, two dashboards and two teams that do not talk to each other.

The effective approach is to measure both in the same place:

1. Identify the key questions your customers actually ask, beyond keywords alone.
2. Track your classic SEO positions on those topics in Google.
3. Track in parallel your citation rate in the main answer engines (ChatGPT, Gemini, Perplexity, AI Overviews).
4. Cross-reference the two to see where you are strong, where you are slipping, and where to focus your efforts.

This is precisely what Pulsar brings together: the tracking of your SEO positions and of your AI citations side by side, in a single interface, rather than in two tools that ignore each other.

In summary

SEO and AEO are not opposed: they answer two ways your customers look for you in 2026. The first makes you appear in a list of links, the second in a written answer. The levers overlap heavily, but the metrics differ, and what is not measured cannot be steered. Start by looking, on your strategic topics, at where you rank and where you are cited. The rest follows from there.