In short: SEO earns positions in search results. AEO, answer engine optimization, earns mentions inside AI answers. GEO, generative engine optimization, is a closely related term for earning citations in generative AI responses. They share foundations, and strong programs plan them together.
The one-paragraph answer
Three acronyms describe one shift. People still search, but they increasingly ask: a question typed into ChatGPT, Gemini, Perplexity or Claude, or answered at the top of Google by an AI Overview. SEO is how a business appears in search results. AEO is how it appears in AI-generated answers. GEO is a newer, largely overlapping name for the same work, with an emphasis on being cited by generative systems. A leader does not need three strategies. They need one program that covers both the list and the answer, built on foundations that serve all three.
AEO vs SEO
This is the comparison most leaders are actually asking about, because it marks the real change: from being ranked to being named.
What AEO optimizes for
Answer engine optimization is the practice of making a brand easy for AI assistants to understand, verify and cite, so it is named and described accurately in AI-generated answers. Its unit of success is the mention. When a client asks an assistant “who are the best estate planning attorneys for a family business?” or “which builders on the lake are known for architect-led homes?”, the question is whether your name appears, how prominently, and in what words.
AEO pays particular attention to things that matter more in an answer than in a list:
- Entity clarity. The assistant has to know exactly which business you are and what you do.
- Consistency across sources. Answers are assembled from your site, your profiles, directories, reviews and press. Contradictions weaken confidence.
- Quotable content. Passages that answer a question directly, near the top of a section, are easier to use and to attribute.
- Accuracy of description. Being named with outdated services or the wrong location is not a win.
What SEO optimizes for
Search engine optimization earns visibility in search results for the queries that matter to a business. Its unit of success is the position. SEO covers technical foundations, such as crawlability, speed, structure and structured data; content that answers real questions with real expertise; and authority earned from credible references elsewhere on the web.
SEO also benefits from mature measurement. Search engines report impressions, clicks and positions directly, and the path from a search to a visit to an inquiry can be traced.
Where they overlap
Far more than the acronyms suggest. Many assistants retrieve pages through search before they answer, so a site that is hard to crawl or weak in search is less likely to be found and cited. Expertise, credibility and earned coverage, the qualities Google describes as E-E-A-T, help in both. Structured data and consistent business information help search engines and AI systems understand the same facts. Good AEO is built on good SEO; it adds attention to entities, third-party sources and description that a ranked list never required.
Where GEO fits
Generative engine optimization was introduced as a term in a 2023 academic paper that studied how generative search engines choose which sources to cite. In industry use it now covers much the same ground as AEO: improving how often and how accurately a brand is cited in answers produced by generative AI.
If there is a difference, it is one of emphasis. AEO is framed around answers and the questions people ask. GEO is framed around generative systems and the sources they cite. In practice the work is the same program. We explain the GEO and SEO relationship in more depth in GEO vs SEO: what changes and what doesn’t.
Comparison table: SEO, AEO and GEO
| SEO | AEO | GEO | |
|---|---|---|---|
| Goal | Rank for relevant searches | Be named and described accurately in AI answers | Be cited in generative AI responses |
| Where you appear | Search results, maps, rich results | ChatGPT, Gemini, Perplexity, Claude, Copilot, AI Overviews | The same AI systems, with a focus on cited sources |
| Key signals | Relevance, technical health, content quality, authority | Entity clarity, consistent facts, quotable content, trusted sources | Citable passages, third-party sources, entity clarity |
| Measurement | Rankings, impressions, clicks, conversions | Prompt sampling: mentions, position, accuracy | Prompt sampling: citations and sources |
| Timeline | Technical fixes in weeks; rankings over months | Retrieval changes in weeks; model knowledge over months | As AEO |
| Depends on | Its own foundations | SEO foundations | SEO foundations |
The table makes the point visually: the last two columns are nearly identical, and both depend on the first.
Which should a premium brand prioritize?
The honest answer is “all three, in proportion”, but the proportion depends on the situation.
- A new or recently rebranded business. Start with SEO foundations and entity clarity. Until search engines and AI systems can confidently identify the business, neither rankings nor mentions will come reliably.
- An established brand with a strong reputation. Measure first. Established brands are often named in AI answers already, but sometimes with outdated facts or alongside competitors they would not expect. An AI visibility audit shows where the gaps are, and AEO work can close them relatively efficiently.
- A brand with a reputation issue. The first page of Google and the sources AI assistants read are often the same pages. Reputation work, AEO and SEO should be planned together so improvements in one are reflected in the others.
- A local or regional practice. Local SEO and an accurate Google Business Profile remain the foundation. AI assistants increasingly answer “near me” questions using the same listings and reviews, so consistency there pays twice.
Is SEO dead in 2026?
No. What has changed is that search is no longer the only place a buying decision begins. People still search, still click and still compare, especially for considered purchases. And AI systems that answer questions frequently rely on search indexes to find their sources. A business that neglects SEO weakens its visibility in both places.
What is fading is a narrow version of SEO: chasing rankings for keywords with little regard for who is searching, how the brand is described, or what the wider web says about it. The version that remains, covering technical excellence, genuine expertise and earned authority, is the foundation AEO and GEO are built on. You can read how we approach it on our SEO page.
How to start
- Measure where you stand across a fixed set of realistic client questions, in search and in the leading assistants. Prompt sampling is the method.
- Fix the foundations that serve all three: crawlability, speed, structure and accurate structured data.
- Make your entity unambiguous with one name, one description and consistent facts everywhere.
- Write to be quoted, answering the questions clients ask, directly and with real expertise.
- Earn your place in the publications, directories and review platforms that AI assistants cite in your field.
No one can guarantee what an AI model will say, and claims otherwise should be treated with caution. But these steps improve rankings and citations together, which is why we treat them as one program. For more, see our answer engine optimization services, our generative engine optimization work, the longer guide What is answer engine optimization?, or the AI search glossary.
Frequently asked questions
What is AEO optimization?
Answer engine optimization is the practice of making a brand easy for AI assistants to understand, verify and cite, so it is named and described accurately in AI-generated answers. It builds on SEO rather than replacing it.
What is new instead of SEO?
Nothing has replaced SEO. AEO and GEO extend it to AI-generated answers, and they depend on the same foundations: a sound website, genuine expertise and credible sources.
Do AEO and GEO need different teams?
No. The work overlaps heavily and is best planned as one program, alongside SEO, so that effort is not duplicated and nothing falls between the gaps.
Is AEO or GEO the right term to use?
Either is fine. AEO is the older industry term and GEO comes from academic research. Both describe improving how a brand appears in AI-generated answers. What matters more is how the work is measured.