The short answer
Quick answerSEO (search engine optimization) helps your website rank in search results so people click on it. AEO (answer engine optimization) helps your business get named and quoted inside AI-generated answers from tools like ChatGPT, Gemini, Perplexity and Google AI Overviews. SEO earns the click. AEO earns the recommendation. A modern website needs both.
The two share most of their foundation: a fast, crawlable website, accurate business information and genuinely useful content. The difference is in what each one is trying to win, and in how the content is written and structured.
What is SEO?
DefinitionSearch engine optimization (SEO) is the practice of improving a website so it ranks higher in the organic results of search engines like Google and Bing, bringing more qualified visitors to the site without paying for ads.
SEO has three broad parts:
- Technical SEO: speed, mobile usability, clean URLs, sitemaps, secure HTTPS and a structure search engines can crawl.
- On-page SEO: page titles, headings and content that match what people search for, with clear internal links between related pages.
- Off-page SEO: reputation signals from outside your site, such as links from other websites, your Google Business Profile and reviews.
SEO still matters enormously. AI assistants draw on search indexes to find their sources, so pages that are well ranked and well built are more likely to be read in the first place.
What is AEO?
DefinitionAnswer engine optimization (AEO) is the practice of structuring a website and a business's online presence so AI assistants and answer engines can understand it, trust it and quote it directly when someone asks a question.
"Answer engines" include ChatGPT, Google AI Overviews and AI Mode, Gemini, Perplexity, Microsoft Copilot and voice assistants like Siri and Alexa. Instead of returning a list of links, they write a response, and they usually name only a handful of businesses or sources.
AEO focuses on:
- Answer-first content: pages that state the answer to a real question in the first sentence or two, then explain.
- Structured data: schema.org markup that tells machines exactly who you are, what you offer, where and when.
- Entity consistency: the same name, address, phone, hours and description everywhere your business appears online.
- Trust signals: reviews, credentials, specific details and evidence that you are the real expert.
- Access: letting AI crawlers read your site, and providing summaries like an
llms.txtfile.
What is GEO?
DefinitionGenerative engine optimization (GEO) is another name for optimizing content to be cited by generative AI systems. In practice, GEO and AEO describe the same goal; you will see both terms used.
Some people use AEO for featured snippets and voice answers and GEO for AI chat tools. The work that wins in both is the same, so we treat them as one discipline.
AEO vs SEO compared
| SEO | AEO | |
|---|---|---|
| Goal | Rank high in a list of results | Be named or quoted in the answer |
| Where it shows | Google and Bing results pages | ChatGPT, AI Overviews, Gemini, Perplexity, Copilot, voice assistants |
| How people search | Short keywords: "roofer monterey" | Full questions: "Who's the best roofer near me for a full replacement?" |
| What wins | Relevance, authority, links, technical health | Clear answers, structured data, consistent facts, reviews |
| Success looks like | Rankings, clicks, traffic | Mentions, citations, recommendations |
| Content style | Comprehensive pages targeting topics | Direct answers first, detail second |
How AI assistants decide which businesses to recommend
No AI company publishes an exact formula, but the pattern across assistants is consistent. When someone asks for a recommendation, the assistant looks for sources it can understand and cross-check. Businesses tend to be recommended when:
- Their website answers the question directly. If your page plainly says what you do, where, for whom, and roughly what it costs, it is easy to quote.
- Their facts agree everywhere. The same details on your website, maps listing, directories and social profiles make an assistant more confident.
- Other people vouch for them. Reviews, ratings, press and mentions on other trustworthy sites act as corroboration.
- Their pages are machine-readable. Structured data, clean HTML and fast pages remove guesswork.
- Their content is specific. Real numbers, named service areas, credentials and processes beat generic marketing copy.
Why older websites fall behind
Most small-business websites were built to look good and list services. That was enough when customers compared ten links themselves. It is not enough when an assistant does the comparing for them.
- They talk about the business but don't answer questions. "Quality service since 1998" can't be quoted as an answer to "how much does it cost?"
- They are built on heavy templates. Slow page builders and pop-ups hurt speed and readability for people and crawlers alike.
- They have little or no structured data. Machines are left to infer your hours, services and location.
- They block or confuse AI crawlers. Some sites unintentionally block the very bots that would recommend them.
- They put everything on one page. Without dedicated pages per service and location, there's nothing specific to cite.
The good news: these are all fixable, and the businesses that fix them first in their market have a real head start.
AEO + SEO checklist for your website
- One page per core service, and per city or area you serve.
- An answer in the first two sentences of every key page.
- A FAQ written from real customer questions, with FAQPage schema.
- LocalBusiness (or the right subtype) and Service schema on the site.
- Identical name, address, phone and hours everywhere online.
- A complete, active Google Business Profile.
- A steady flow of genuine reviews, with responses.
- Pages that load fast on a phone and pass Core Web Vitals.
- robots.txt that allows search and AI crawlers you want, plus a sitemap and llms.txt.
- Monthly checks of how AI assistants describe your business.
Frequently asked questions
Is SEO dead because of AI search?
No. AI assistants still rely on search indexes and on well-ranked, well-structured pages to find their sources. Strong SEO is the foundation that AEO is built on. What has changed is that ranking alone is no longer enough; your content also has to be easy for an AI to quote.
Does AEO replace SEO?
No. AEO extends SEO. SEO earns the click from a list of results; AEO earns the mention inside an AI-generated answer. The same website should be built to do both.
How can I check whether AI assistants mention my business?
Ask ChatGPT, Gemini, Perplexity and Google the questions your customers ask, such as the best provider of your service in your city, and note whether your business is named, how it is described and which sources are cited. Repeat the same questions monthly to track change.
What is an llms.txt file?
llms.txt is a plain-text file placed at the root of a website that summarizes what the site is about and links to its most important pages, in a format that is easy for large language models to read. It is an emerging convention that complements robots.txt and sitemap.xml.
What schema markup should a local business use?
Most local businesses should use the most specific LocalBusiness subtype that fits (for example Dentist, Plumber or LegalService), with name, address, phone, hours, service area, services offered and links to official profiles, plus FAQPage markup on pages that answer common questions.
Want this done for you?
Every Veyra Pacific website is built for AEO and SEO from day one, at a fixed price agreed before we start.