Short answer: SEO (Search Engine Optimization) aims to rank your site high in search engines such as Google and Bing; GEO (Generative Engine Optimization) aims to get systems like ChatGPT, Gemini, Perplexity and Google's AI Overviews to understand your brand correctly and cite it as a source in their answers; and AEO (Answer Engine Optimization) focuses on structuring content so that it gives direct, quotable answers to specific questions. They are not three separate strategies but three layers of the same foundation: a site that is technically sound, trustworthy and answers questions clearly wins in all three.
How has search changed?
Until a few years ago, the search experience was simple: a user typed a keyword, saw ten blue links and clicked one. Today, for the same question, a user may:
- See an AI-generated summary above the results on Google,
- Ask ChatGPT or Gemini directly and get an answer with sources,
- Read a synthesis of several websites in an answer engine such as Perplexity.
What this shift means for businesses: ranking on the first page still matters, but it is no longer the only goal. AI systems compile their answers from content on the web, and which sources get selected depends on how clear, trustworthy and quotable that content is. Google also states that no special technique is needed to appear in its AI features and that the fundamental principles of SEO apply here as well.
What is SEO?
Search Engine Optimization is the full set of work that ensures your site can be found, understood and trusted by search engines. It rests on three pillars:
1. Technical SEO
This is the infrastructure search engine bots need to crawl and index your site without problems: fast-loading pages, a correct sitemap, robots.txt, a single correct canonical URL on every page, HTTPS, mobile-friendliness and no broken links. For a detailed checklist, see our technical SEO checklist.
2. Content
Original content that answers the user's search intent and demonstrates expertise. Google's emphasis on "helpful, reliable, people-first content" is decisive here: pages that answer real questions win over near-duplicate pages written for search engines.
3. Authority
Other trustworthy sites linking to you, your brand being mentioned consistently across different platforms, and the expertise of your authors being visible. For a new site, this is the layer that develops most slowly but lasts the longest.
What is GEO?
Generative Engine Optimization is the work that helps search and chat systems built on large language models understand your brand correctly and cite it as a source in their answers. The concept gained traction with the 2023 academic paper titled "GEO: Generative Engine Optimization." The study showed that methods such as citing sources and adding statistics to content could increase visibility in generative engine responses by up to 40%, although the effect varied from domain to domain.
In GEO, what matters is clarity more than ranking:
- Entity consistency: Your brand's name, what it does, where it operates and who is behind it should be described the same way on your site, your social profiles and in directories.
- Machine-readable structure: Schema.org structured data (Organization, Service, Article, FAQPage) helps AI classify your content correctly.
- Citations and evidence: Backing up your figures, dates and claims with reliable sources increases the likelihood that your content gets quoted.
- Access permission: If your robots.txt file blocks bots such as GPTBot, ChatGPT-User or PerplexityBot, those systems cannot read your site. Which bots you allow should be a deliberate decision.
For practical steps, see our visibility guide for ChatGPT, Gemini and Perplexity.
What is AEO?
Answer Engine Optimization means structuring content so that it gives direct, concise and accurate answers to the specific questions users ask ("How long does custom software take?", "What is the 3-2-1 rule for backups?"). Both Google's featured snippets and AI-generated answers readily quote content structured this way.
The basic AEO pattern looks like this:
- Make the question the heading: An H2 or H3 close to the sentence the user would type.
- Give the short answer first: The complete answer to the question should appear within the first 40–60 words.
- Then go into detail: Conditions, exceptions, examples and figures.
- Mark up the structure: Use lists, tables and structured data such as FAQPage where appropriate.
An important update: Since August 2023, Google has shown FAQ rich results only for well-known, authoritative government and health websites, and it has removed HowTo rich results. That is why FAQPage markup should be used not for a "starred" appearance in results but to help machines understand your content correctly. For choosing the right schema, take a look at our structured data guide.
The differences between SEO, GEO and AEO
| Aspect | SEO | GEO | AEO |
|---|---|---|---|
| Goal | Ranking high in search results | Being a source in AI answers | Being the direct answer to a specific question |
| Channel | Google and Bing results pages | ChatGPT, Gemini, Perplexity, AI Overviews | Featured snippets, voice assistants, AI answers |
| Success metric | Impressions, clicks, rankings | Mentions and citations in answers | Being quoted in snippets and answers |
| Key factors | Technical health, content, links | Entity consistency, evidence, access | Question-and-answer structure, clarity |
| Time to results | Months | Months; grows as consistency improves | Weeks to months |
The common foundation: all three reward the same thing
These three acronyms should not be seen as separate "tricks." What all three reward is the same:
- A technically accessible site (fast, crawlable, rendering content on the server),
- Content that answers a real question and makes its expertise visible,
- A consistent and verifiable brand identity.
Without this foundation, no amount of schema will deliver results. With a solid foundation, GEO and AEO work becomes small but effective layers added on top of SEO.
Which content gets quoted most in AI answers?
When answering a question, AI systems prefer content that addresses the question directly and can easily be broken into pieces. The content types we most often see quoted in practice are:
- Definition and comparison pages: Content that answers questions such as "What is X?" or "What's the difference between X and Y?" with a short definition and a table.
- Step-by-step guides: Numbered steps, a single action per step and a checklist at the end.
- Content with figures and sources: Paragraphs that support a claim with a date and a source give AI pieces of information it can pass on with confidence.
- Explanations of price, duration and conditions: Answers to practical questions such as "How long does it take?" or "When is it necessary?" that state ranges and conditions.
- Content with a clear expert behind it: Articles that show the author, publication and update dates, and link to an about page.
By contrast, content that delays the actual answer with long introductions, repeats the same information across different pages or is full of unsupported claims falls behind in both search engines and AI answers.
A note for local businesses
For queries that include a location, such as "near me" or "in Istanbul," AI systems and Google draw on business profiles, reviews and consistent address and service-area information. For businesses that serve a local area, GEO work should not be considered separately from Google Business Profile and local SEO.
How do you measure it?
| Layer | What to measure | Tool |
|---|---|---|
| SEO | Impressions, clicks, average position, indexed pages | Google Search Console, Bing Webmaster Tools |
| GEO | Visits from AI systems, brand mentions in answers | Referral sources in your analytics tool; regular question tests |
| AEO | Featured snippets, click-through rate on question-type queries | Search Console query report |
Measuring GEO is not yet a mature field. A practical method: define 15–20 questions related to your service, ask them to different AI systems every month, and record in a spreadsheet whether your brand is mentioned and which sources are shown.
A 30-day starter plan
| Week | What to do |
|---|---|
| 1 | Set up Search Console and Bing Webmaster Tools, submit your sitemap, run a technical crawl and list the errors |
| 2 | Align brand information (name, description, service area, contact details) across your site and profiles; add Organization and Service schemas |
| 3 | Identify the 10 most frequently asked questions; for each, create content or add a section to an existing page using the "short answer first" structure |
| 4 | Add reliable sources to your content, decide on AI bot access in robots.txt and run your first question tests |
Common misconceptions
- "GEO has replaced SEO." No. AI systems largely compile their answers from well-optimized content on the web. Without an SEO foundation, there is no GEO.
- "If I add llms.txt, I'll show up in AI." llms.txt is a file format proposed to give AI systems a summary of a site. It can be useful, but it is not yet a standard that all systems implement. On its own, it will not deliver results.
- "Adding FAQ schema to every page is AEO." Schema marks up questions and answers that actually exist in the content. If the content is weak, schema cannot make up for it.
- "If I repeat the keyword enough, AI will pick me." Language models evaluate meaning; natural, clear and evidence-based writing is more effective than repetition.
How does your brand appear on Google and in AI answers? With our SEO / GEO / AEO service, we manage all three layers in a single strategy, from technical audits and content structure to monthly measurement of your AI visibility.
Sources
Frequently Asked Questions
No. Your existing site's technical structure, content, structured data and the consistency of your brand information are optimized for GEO; there is no need for a separate site.
No. Question-focused headings, a short and clear answer in the first paragraph, supporting detail and sources, appropriate structured data and source credibility all need to work together.
There is no fixed timeline. Technical fixes and content structure can be completed within a few weeks; the impact of brand consistency and authority signals usually becomes visible over several months.
If visibility is your goal, generally yes; bots blocked by robots.txt cannot read your content or cite it in their answers. If you have paid or private content, you should make a deliberate decision about which bots to allow.