# AEO vs GEO vs SEO: What Is the Difference? SEO earns a ranking, AEO earns a quoted answer, GEO earns a place in a generated one. One site serves all three. What differs, and where the effort goes. By Mike Murphy, Owner and Founder of Rivet Bay. Published September 17, 2026. 8 min read. Canonical: https://rivetbay.com/articles/aeo-vs-geo-vs-seo --- ![A flat illustration of a nautical chart on a table, with dividers, a parallel rule, and a compass all pointing at the same marked spot.](https://rivetbay.com/articles/aeo-vs-geo-vs-seo/header.webp) **TL;DR.** Search Engine Optimization (SEO) earns a ranking in a list of results. Answer Engine Optimization (AEO) earns the quoted passage in an assistant's answer. Generative Engine Optimization (GEO) earns an accurate place in an answer the engine writes. They are three names for one job seen from three angles, and one well-built website serves all of them. The differences that matter are what each engine does with your page and what you measure afterward. If you want the definitions first, start with [what Answer Engine Optimization is](https://rivetbay.com/articles/what-is-aeo-answer-engine-optimization). ## What do SEO, AEO, and GEO each mean? SEO, AEO, and GEO describe the same discipline pointed at three kinds of engine: one that ranks pages, one that quotes passages, and one that writes an answer and cites its sources. **Search Engine Optimization (SEO)** is the work of earning a position in a list of results, and the click that follows. It has been called that since the late 1990s, and it covers everything from page speed to the links other sites give you. **Answer Engine Optimization (AEO)** is the work of being the passage an assistant quotes when someone asks a question. The answer engines are the tools that reply in sentences: ChatGPT, Perplexity, Google's AI Overviews and AI Mode, Gemini, Claude, and Microsoft Copilot. [Our definition of AEO](https://rivetbay.com/articles/what-is-aeo-answer-engine-optimization) walks through what those tools do with a page. **Generative Engine Optimization (GEO)** is the work of being represented well, and accurately, inside an answer the engine composes from several sources. The name comes from a research paper published in November 2023, ["GEO: Generative Engine Optimization"](https://arxiv.org/abs/2311.09735), which used "generative engine" for a search tool that synthesizes a response and cites where it came from. Marketing adopted the acronym within the year. You will also meet AIO, GSO, and LLMO. AIO usually means Google's AI Overviews, the answer block at the top of a results page, and sometimes "AI optimization." GSO is "generative search optimization," and LLMO is "large language model optimization." All three describe the work this article calls GEO. They are not separate areas of work, and you do not need a special budget for them. ## What is the actual difference between them? The difference is in the engine, not in your website: a search engine ranks a page, an answer engine lifts a passage, and a generative engine gathers facts from many pages and writes its own answer. **Figure 1.** One page and one customer question through three engines: what each engine does with the page, and what it hands back to the person asking. One page and one customer question through three engines. 1. Search engine (SEO): Ranks the page against every other page on the intent. You get a position and a click. 2. Answer engine (AEO): Lifts the passage that answers the question on its own. You get quoted, with your name and a link. 3. Generative engine (GEO): Reads many pages and writes a new answer from all of them. You get named, and described correctly. Take one page on your site and one question a customer asks. A **search engine** matches the question to an intent, weighs the page against every other page on that intent, and returns a ranked list. Your reward is a position and a click. An **answer engine** fetches the page, looks for a passage that answers the question on its own, and quotes it with your name and a link. Your reward is the citation, which may or may not bring a click. A **generative engine** runs several searches at once, reads the pages it finds, and writes a new answer that draws on all of them, with sources listed at the end. Google describes "query fan-out" in its [documentation on AI features](https://developers.google.com/search/docs/appearance/ai-features). Your reward is being named, and being described correctly. The same product often plays two of these roles. ChatGPT quotes a single passage for a narrow question and synthesizes for a broad one. Google returns a ranked list and an AI Overview on the same screen. The table sets the three side by side. | Aspect | Search engine (SEO) | Answer engine (AEO) | Generative engine (GEO) | | ----------------- | -------------------------------------------------- | ------------------------------------------------------------- | ----------------------------------------------------------------- | | What it rewards | A page that matches an intent and has earned links | A passage that answers a question on its own | Facts about you that agree across many sources | | The unit it reads | The page | The passage | The entity: your business, and what the web says about it | | Where you appear | A ranked list | A quoted answer with a link | A written answer with citations | | What you measure | Rankings, impressions, clicks | Citations for the questions you chose | Mentions, and whether what is said about you is right | | What goes wrong | Thin pages, slow sites, no links | Headings that are not questions, answers buried mid-paragraph | Your name, phone, or services differ from one profile to the next | Read the last row twice. It is where the three ask for different work. ## What stays the same across all three? Everything the page is made of stays the same: fast, crawlable HTML, headings that are questions, a first sentence that answers, structured data that says who you are, and a named author. Answer engines and generative engines do not keep a private copy of the web. They search it, using the same index and many of the same trust signals a search engine uses, so a page that cannot rank is rarely quoted or cited. Google says so about its own products. Its documentation states that there are "no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary," and that you "don't need to create new machine readable files, AI text files, or markup" to appear there ([Google Search Central, AI features and your website](https://developers.google.com/search/docs/appearance/ai-features)). We will not repeat the five fundamentals and why each engine cares about them, as they appear in [the definition article's comparison table](https://rivetbay.com/articles/what-is-aeo-answer-engine-optimization#how-is-aeo-different-from-seo). When your SEO is done properly, most AEO and GEO work is already done. If your SEO is a plugin and a keyword list, the gap shows up first in the AI answers, because they have less patience for pages that do not answer anything. ## Where does the effort actually diverge? The effort diverges at the edges: SEO adds work off the page, AEO adds work inside the page, and GEO adds work across every place your business is described. - **SEO adds link authority and intent mapping.** Which pages exist, which questions each one targets, and which other sites vouch for you with a link. No assistant replaces that, and no assistant grants it. - **AEO adds the shape of the answer.** The heading is the question. The first sentence answers the question and stands alone. The FAQ is on the page, not behind a click. A named author with a bio sits under the headline. This is the work that turns a page that ranks into a page that gets quoted. - **GEO adds consistency of the facts about you.** A generative engine reads your site, your Google Business Profile, your LinkedIn page, your reviews, and other mentions, then writes one description. If your phone number, service list, or location differ from one source to the next, the engine either picks one at random or hedges. Neither is good for you. On rivetbay.com, the GEO work looks like this. One structured-data graph describes the business, the website, the founder, and each article, and every page refers to the same identities. The organization record links to our profiles on X, Instagram, LinkedIn, and Google Maps, so an engine can confirm that the account it found is ours. The business name, phone number, and home city read the same on the site and on the Google Business Profile, which is verified. Our `robots.txt` names the AI crawlers from OpenAI, Anthropic, Perplexity, and Google and allows them, and the copy on every page is in the HTML before any script runs. [The GEO website checklist](https://rivetbay.com/resources/geo-website-checklist) turns those decisions into checks you can run on your own site. ## Which one should a business focus on? Focus on the website, because one site built properly serves all three engines, and then put the remaining effort where your customers ask their questions. For most businesses that order looks like this. First, the foundation from [the SEO website checklist](https://rivetbay.com/resources/seo-website-checklist): a fast site, copy in the HTML, one page per question that matters, and clean structured data. Second, the shape of each answer from [the AEO website checklist](https://rivetbay.com/resources/aeo-website-checklist): question-led headings, first sentences that answer, a visible FAQ, and a named author. Third, the facts about you, made consistent everywhere they appear. Doing those three things means you have done AEO and GEO without paying for them separately. We say AEO, because the concrete goal for a business is to be the answer to a customer's question, and we build every site for all three engines from the first line of code. One honest note belongs here. Nobody outside the platforms controls how an assistant chooses its sources, so no one can promise you a citation, a mention, or a position. Anyone who does is promising something about someone else's product. ## How do you measure each one? Measure SEO with rankings and clicks, AEO by asking the questions and recording who gets quoted, and GEO by checking what the assistants say about you and whether it is right. - **SEO.** Google Search Console reports impressions, clicks, and average position for each query and page. That is the same report it has always been. - **AEO.** Ask the same questions of the same assistants each month and write down who they cite. Visits from chatgpt.com, perplexity.ai, and copilot.microsoft.com show up as referrers in Google Analytics. Google's AI features do not get their own report: its documentation says sites appearing in AI Overviews and AI Mode "are included in the overall search traffic in Search Console," under the Web search type ([Google Search Central, AI features and your website](https://developers.google.com/search/docs/appearance/ai-features)). - **GEO.** Ask an assistant to describe your business, your services, and your location, and compare the answer with the facts. A wrong phone number or a service you do not offer is a GEO problem, and the fix is usually a profile somewhere that still says the old thing. Watch the questions, not the totals. A citation for "who builds custom websites for a manufacturer" is worth more to us than traffic for something we do not sell. If you want a site built for all three engines from the start, [our answer engine optimization services](https://rivetbay.com/services#aeo) show how we handle it in design, development, and content management after launch. If you prefer to talk it through first, [start a project with us](https://rivetbay.com/contact) and bring the questions your customers ask. ## Frequently asked questions ### Will AEO replace SEO? No. Answer engines read the same web index and lean on the same trust signals as search engines, so a page that ranks nowhere is rarely quoted anywhere. AEO changes what you optimize for, from a ranking to a citation, without changing the fundamentals: fast pages, question-led headings, a direct first sentence, and a named author. ### Is AEO part of GEO? In practice, yes. Generative Engine Optimization is the broad goal of being represented well inside AI-generated answers, and Answer Engine Optimization is the narrower craft of being the passage an assistant quotes for a specific question. The page handles both jobs, and most people in the industry use the two terms interchangeably. ### Is GEO replacing SEO? No. Generative engines such as ChatGPT, Perplexity, and Google's AI Mode run web searches to build their answers, so they depend on the same index that search engines rank. Google states that no special optimization, files, or structured data are needed to appear in its AI features. GEO adds a layer of work on top of SEO; it does not replace it. ### What does GEO stand for? GEO stands for Generative Engine Optimization. The term comes from a November 2023 research paper of the same name, which used 'generative engine' for a search tool that writes a synthesized answer and cites its sources. In marketing, GEO now means the work of getting your business represented accurately in those answers. ### How do you do AEO and GEO at the same time? Build one site that answers real customer questions in the first sentence under each heading, name the author, keep the copy in the HTML, allow the AI crawlers, and make sure the facts about your business agree across your site, your Google Business Profile, and your social profiles. That single set of decisions covers both, and it covers SEO as well. ### Is SEO still worth it now that people ask AI? Yes. Every AI assistant that cites sources gets them from a web index, and Google's AI features draw on the same ranking systems as its classic results. A site that is fast, crawlable, and clearly written earns the ranking, the quoted answer, and the citation from the same pages. Dropping SEO removes the foundation the other two stand on. --- Written by Mike Murphy, Owner and Founder of Rivet Bay. Every claim about the business in this article comes from what Rivet Bay can verify; outside statistics link to their source. Source: https://rivetbay.com/articles/aeo-vs-geo-vs-seo. Published by Rivet Bay, https://rivetbay.com/.