If you've heard "AEO" and "GEO" thrown around alongside SEO and aren't sure what's actually changed, here's the short answer: search itself has split into three overlapping disciplines, and businesses that only optimise for one are increasingly invisible in the other two.

SEO: getting ranked

Search Engine Optimization is the discipline you already know — improving how your website ranks in traditional search results like Google. It's built on keywords, backlinks, site speed, and technical crawlability. SEO still matters. It remains the foundation the other two disciplines are built on top of.

AEO: getting the answer, not just the click

Answer Engine Optimization is about structuring content so it can be extracted directly into answer-first experiences — Google's Featured Snippets, "People Also Ask" boxes, and voice search results. Instead of ranking a page and hoping someone clicks it, AEO aims to have your content be the answer, verbatim, in the result itself. That means writing in direct question-and-answer formats, using clear headings that mirror how people actually ask things, and structuring content so a machine can lift out a clean, accurate answer.

GEO: getting cited by AI

Generative Engine Optimization is the newest and fastest-growing layer. When someone asks ChatGPT, Perplexity, or Google's AI Overviews a question, the AI doesn't rank pages — it synthesises an answer from multiple sources and may cite a handful of them. GEO is about earning that citation: demonstrating topical depth, being mentioned across credible third-party sites, and structuring content so an AI model can confidently attribute a claim to you.

Why you need all three, not just one

These disciplines overlap far more than they compete. Strong SEO fundamentals — indexable pages, fast load times, clear site structure — are still the prerequisite for AI systems to find and trust your content at all. AEO's answer-first structure makes your content easier for both search engines and AI models to extract cleanly. And GEO's emphasis on topical authority and third-party mentions is what turns "found" into "cited and recommended."

In practice, a business optimising only for classic SEO in 2026 is optimising for a shrinking share of how people actually search. A meaningful and growing portion of research now happens entirely inside AI chat interfaces, with no click-through at all. If your content isn't structured to be understood and trusted by those systems, you're invisible in that conversation — even if you'd rank on page one of Google.

Where to start

You don't need to rebuild your entire content strategy overnight. Start with:

  • An honest audit of how discoverable you currently are across Google, AI Overviews, and a tool like ChatGPT or Perplexity.
  • Direct-answer content — rewrite your most important pages so the first sentence under each heading actually answers the question the heading poses.
  • Structured data (schema markup) so machines can parse who you are, what you offer, and what questions your content answers.
  • A presence beyond your own site — being mentioned, quoted, or linked from other credible sources is one of the strongest signals AI systems use to decide who to trust.