Search is changing. People still use Google and Bing to discover websites, products and services, but they are increasingly using AI-powered platforms such as ChatGPT, Gemini and Perplexity to find information and recommendations.
This has brought three important terms into digital marketing: SEO, AEO and GEO.
But what is the difference between SEO vs AEO vs GEO, and does your business need all three?
Here’s a simple explanation:
- SEO (Search Engine Optimisation) improves a website’s visibility in traditional organic search results.
- AEO (Answer Engine Optimisation) makes information easier for answer-based search experiences to understand and present as direct answers.
- GEO (Generative Engine Optimisation) focuses on improving the opportunity for a brand or its content to be discovered, mentioned or cited in AI-generated responses.
Although their objectives differ, these approaches share many foundations. They are not competing strategies or replacements for one another.
In this guide, you’ll learn how SEO, AEO and GEO differ, where they overlap and how businesses can build a connected strategy to improve visibility across search engines and AI-powered platforms.
What Is SEO (Search Engine Optimisation)?
Search Engine Optimisation, or SEO, is the process of improving a website so that it can be discovered and perform well in organic search results.
When someone searches Google or Bing for a product, service or answer, the search engine identifies and displays pages it considers relevant to the query.
SEO helps your website become more accessible, understandable and relevant to those searches.
For example, a business offering SEO consultancy in Bristol may want its website to appear when someone searches:
- SEO consultant Bristol
- SEO services for small businesses
- Technical SEO consultant
- Local SEO services Bristol
The objective is to attract relevant visitors who may become customers.
Main areas of SEO
SEO involves several connected activities.
Technical SEO
Technical SEO focuses on the technical health and accessibility of a website. It includes crawling, indexing, website architecture, page performance, mobile usability and resolving technical issues.
On-page SEO
On-page SEO improves the content and elements of individual pages. This includes page titles, meta descriptions, headings, internal links, content relevance and search intent.
Off-page SEO
Off-page SEO involves activities that strengthen a website’s reputation and authority beyond its own pages. Relevant backlinks, digital PR and genuine brand references can contribute to this.
Content SEO
Content SEO focuses on creating and improving useful content that addresses the needs and questions of the intended audience.
Local SEO
Local SEO helps businesses improve their visibility for location-related searches. It includes Google Business Profile optimisation, local landing pages, reviews and relevant business information.
How is SEO measured?
Traditional SEO performance is commonly measured through:
- Organic search impressions.
- Keyword rankings.
- Organic clicks.
- Click-through rate (CTR).
- Organic website traffic.
- Leads and conversions.
- Revenue generated through organic search.
The main objective is to attract relevant organic visibility and turn it into meaningful business outcomes.
What is AEO (Answer Engine Optimisation)?
Answer Engine Optimisation, or AEO, is the process of making website information easier for answer-based search experiences to understand, extract and present in response to users’ questions.
Traditional search often displays a list of pages that users can visit. An answer engine may instead provide a direct response, sometimes without requiring the user to open a website.
For example, someone might search:
“What is technical SEO?”
An answer-based search experience may display a short definition explaining that technical SEO involves improving a website’s technical foundations so search engines can crawl, understand and index its pages.
AEO aims to make your content a useful candidate for these direct answers.
Where does AEO apply?
AEO is commonly associated with:
- Featured snippets.
- People Also Ask results.
- Voice search answers.
- Direct-answer search features.
- AI-powered question-and-answer experiences.
The exact scope of AEO varies between marketers and publications. Some use it mainly for featured snippets and voice search, while others include AI-generated answers and conversational search tools.
For this article, AEO refers to optimising information so it can be selected and presented as a direct answer.
How to Optimise Content for AEO
Answer questions directly
Identify the questions your audience asks and provide clear answers near the beginning of the relevant section.
For example:
What is local SEO?
Local SEO is the process of improving a business’s visibility in location-related search results so that nearby customers can discover its products or services.
Use question-based headings
Organise relevant sections around real questions.
Examples include:
- What is technical SEO?
- How does local SEO work?
- Why is website indexing important?
- How long does SEO take?
Keep explanations clear
Avoid unnecessary introductions and complicated language. Explain the main point first, then provide supporting detail.
Use appropriate formatting
Use descriptive headings, short paragraphs, numbered steps, bullet points and tables where they make information easier to understand.
Provide complete answers
A short answer may be useful, but it should not replace the context readers need. Explain the relevant details, limitations and practical implications.
How is AEO measured?
Depending on the platform and search feature, useful measures may include:
- Featured snippet visibility.
- People Also Ask appearances.
- Voice search visibility, where measurable.
- AI answer appearances.
- Brand mentions.
- Website citations.
- Relevant referral traffic.
Not every answer feature provides reliable reporting. Measurement should reflect what the relevant platform actually makes available.
What is GEO (Generative Engine Optimisation)?
Generative Engine Optimisation, or GEO, is an approach to improving a brand’s visibility within responses generated by AI-powered systems.
Instead of focusing only on whether a webpage appears in a list of search results, GEO considers whether a business, its information or its website content may be included in an AI-generated response.
Examples of generative AI search experiences include:
- ChatGPT Search.
- Google AI Overviews and AI Mode.
- Microsoft Copilot.
- Perplexity.
- Gemini.
Consider someone asking:
“Which SEO consultant should a small business in Bristol consider?”
An AI-powered search experience may generate a response discussing several providers, explaining relevant services and displaying links to supporting websites.
GEO aims to improve the opportunity for a business to be discovered, understood, mentioned or cited in these responses.
Main areas of GEO
Content quality and relevance
Create useful content that answers real questions, explains topics accurately and provides information beyond generic summaries.
Topical coverage
Build a connected collection of relevant pages that demonstrate knowledge across important subjects.
Entity and brand clarity
Make it easy to understand who your business is, what it offers, where it operates and which customers it serves.
Credibility and supporting evidence
Use verifiable information, relevant references, genuine experience and accurate business details.
Technical accessibility
Ensure important pages are accessible to the relevant search systems and are not unintentionally blocked.
External brand presence
Build a genuine reputation through relevant publications, professional profiles, customer reviews and other credible references.
How is GEO measured?
GEO measurement focuses more on brand and source visibility within generative responses.
Useful measures include:
- AI-generated brand mentions.
- Website citation frequency.
- Pages cited by AI platforms.
- Share of visibility across selected prompts.
- Competitor mentions.
- Referral traffic from AI platforms.
- Leads and conversions influenced by AI search.
These measurements are not yet standardised across all platforms. Results can also vary depending on the question, location, time and search experience being tested.
SEO vs AEO vs GEO: Key differences
The three approaches have different primary objectives, but many of their activities overlap.
The following table provides a practical comparison.
| Comparison | SEO | AEO | GEO |
| Full form | Search Engine Optimisation | Answer Engine Optimisation | Generative Engine Optimisation |
| Main objective | Improve visibility in organic search results | Make content suitable for direct answers | Improve visibility in AI-generated responses |
| Primary focus | Website pages and search performance | Questions and direct answers | Brand, content and source visibility |
| Typical search experience | Google and Bing organic results | Featured snippets, direct answers and voice search | ChatGPT, Gemini, Perplexity and other generative search experiences |
| Content approach | Relevant, useful and comprehensive pages | Clear answers to specific questions | Useful, well-supported content with clear context and expertise |
| Important activities | Technical SEO, on-page SEO, content and authority | Question research, direct answers and clear formatting | Content quality, technical access, entity clarity and credibility |
| Common measurements | Rankings, impressions, clicks and conversions | Answer appearances and available citation data | Brand mentions, citations and AI referral traffic |
| Main business opportunity | Attract organic visitors | Become a visible source of direct answers | Become a recognised source in AI-generated responses |
Important: This is a practical distinction, not a strict technical separation. Different organisations use AEO and GEO in different ways, and some use the terms interchangeably.
Google’s own guidance describes AEO and GEO as terms used for work focused on AI search visibility. It also explains that, from Google’s perspective, optimising for its generative AI search features is still SEO.
How SEO, AEO and GEO work together
The strongest approach is not to run three completely separate optimisation campaigns.
Instead, build one connected strategy that supports traditional search visibility, direct answers and generative AI discovery.
Consider a business offering technical SEO services.
Step 1: Build the SEO foundation
Create a detailed technical SEO service page.
Optimise its content, title, headings, internal links and technical accessibility. Make sure the page clearly explains the service and who it is intended for.
Step 2: Add AEO-focused content
Identify questions potential customers ask about technical SEO.
For example:
- What does a technical SEO audit include?
- Why are pages not getting indexed?
- What causes crawl errors?
- How can I improve website crawlability?
Create clear explanations that directly answer these questions.
Step 3: Strengthen GEO visibility
Build supporting content around technical SEO topics.
Include practical examples, explain your approach, reference reliable sources and connect related pages through internal links.
Make sure your business information is clear and your website is accessible to relevant search systems.
Step 4: Measure the different outcomes
Track traditional organic performance, answer visibility and AI citations separately.
This helps you understand where your website is gaining visibility and which activities need further attention.
Practical SEO, AEO and GEO strategy for small businesses
Small businesses do not need three separate teams or a large content budget to work towards all three objectives.
A focused strategy can cover the shared foundations first.
Start with your main services
Make sure each important service has a clear, useful page.
Explain:
- What the service involves.
- Which problems it addresses.
- Who it is suitable for.
- How the process works.
- What customers can expect.
- How to enquire.
Your service pages should support commercial search intent rather than trying to answer every informational question.
Research customer questions
Find the questions people ask before purchasing your service.
Use keyword research, Google search results, People Also Ask, customer enquiries and relevant industry discussions.
Group related questions into topics and use them to plan supporting articles.
Publish useful supporting content
Create guides, comparisons, tutorials and genuine case studies.
For example, an SEO consultancy could publish:
- How to improve local search visibility.
- Technical SEO checklist for small businesses.
- SEO vs AEO vs GEO explained.
- How to measure AI search visibility.
- A documented experiment testing website visibility in AI search.
Each article should have a distinct purpose and provide information that is useful to its intended audience.
Improve technical accessibility
Review crawling, indexing, canonical tags, website structure, mobile usability and page performance.
For AI search, also check the relevant crawler access requirements for the platforms you want to be discoverable on.
Strengthen brand information
Keep your business name, services, contact details and service areas accurate.
Publish a useful About page and provide verifiable information about your experience and working approach.
Build genuine authority
Contribute useful information to relevant publications, develop professional relationships and encourage genuine customer feedback.
Do not manufacture reviews, mentions or backlinks.
Measure performance
Monitor traditional search performance in tools such as Google Search Console and your analytics platform.
For AI search, periodically test relevant prompts, record brand mentions and citations, and review referral traffic where available.
Common misconceptions about SEO, AEO and GEO
As interest in AI search grows, new optimisation techniques and claims appear frequently. It is important to separate useful practices from unsupported promises.
Myth 1: GEO means traditional SEO is no longer important
Reality: Traditional SEO remains important. Google confirms that its generative AI search features build on its core Search systems and established SEO practices.
Myth 2: AEO is only about adding FAQs
Reality: FAQs can be useful, but AEO is broader than FAQ sections. It involves understanding user questions and presenting clear, relevant answers throughout your content.
Myth 3: GEO requires a completely different type of content
Reality: Useful, original and well-supported content remains important. You do not need to write every article in an artificial style just because it targets AI search.
Myth 4: Special schema guarantees AI citations
Reality: Structured data can help describe webpage information, but there is no special schema markup that guarantees inclusion in AI-generated answers.
Myth 5: Adding an llms.txt file guarantees AI visibility
Reality: Google states that llms.txt is not required for inclusion in its Search or generative AI features. Do not treat it as a guaranteed ranking or citation technique.
Myth 6: Publishing more articles automatically improves GEO
Reality: Content quantity alone does not establish expertise or credibility. Focus on useful, original information that addresses genuine audience needs.
Myth 7: Ranking number one on Google guarantees ChatGPT citations
Reality: Organic rankings and AI citations are different visibility outcomes. Strong SEO can support wider discoverability, but it does not guarantee that an AI system will select your website as a source.
Frequently Asked Questions
What is the difference between SEO, AEO and GEO?
SEO focuses on improving visibility in organic search results. AEO focuses on making content suitable for direct answers in answer-based search experiences. GEO focuses on improving the opportunity for a brand or its content to be mentioned or cited in AI-generated responses. All three share important SEO foundations.
Is GEO better than SEO?
GEO is not necessarily better than SEO. They address different visibility outcomes. SEO remains important for attracting organic search traffic, while GEO focuses on visibility in generative AI responses. Businesses should consider both as part of a wider search strategy.
Is AEO part of SEO?
AEO can be considered an extension of SEO because both aim to make information discoverable and useful in search experiences. AEO places particular emphasis on direct answers, while SEO covers a broader range of website and search visibility activities.
Is GEO the same as AI SEO?
The terms are related but not always identical. AI SEO is often used as a broad term for improving visibility across AI-powered search experiences. GEO generally refers more specifically to optimising a brand or its content for generative AI responses.
Do I need separate SEO, AEO and GEO strategies?
Not necessarily. Most businesses can use one connected strategy. Start with technical SEO, useful content and clear business information, then refine the content and measurement approach to support direct answers and AI-generated search visibility.
Does Google AI Overview use SEO signals?
Google states that its AI search features are rooted in its core Search ranking and quality systems. It uses information from its Search index to generate responses and provide links to relevant webpages. Established SEO practices therefore remain relevant to visibility in Google’s AI features.
Can a small business benefit from AEO and GEO?
Yes. Small businesses can create useful specialist content, explain their services clearly and build a credible online presence. They should focus on answering the questions their customers ask rather than trying to publish large quantities of generic content.
How do I measure SEO, AEO and GEO performance?
Measure each area according to its objective. Use rankings, organic clicks, traffic and conversions for SEO. Track available direct-answer and search-feature appearances for AEO. For GEO, monitor AI-generated brand mentions, website citations, cited pages and referral traffic from AI platforms where available.
SEO, AEO and GEO: Building a Unified Search Visibility Strategy
SEO, AEO and GEO are often presented as three competing approaches to online visibility. In practice, they are closely connected.
SEO helps people discover your website through organic search. AEO makes your information easier to use in direct-answer experiences. GEO focuses on improving your chances of being represented in AI-generated responses.
The most effective strategy is to build on the foundations they share: a technically accessible website, useful content, clear business information and genuine credibility.
You do not need to abandon traditional SEO or create a completely separate website for AI search. Instead, strengthen what you already have and develop supporting content that answers the questions your audience is asking.
If you want to understand how these approaches can work together to improve your website’s visibility across Google and AI-powered search experiences, explore my AI SEO services.
About the author
I am Hridoy Chowdhury, an independent SEO consultant. I work directly with businesses on website visibility, technical SEO, content optimisation and AI search. My services supports Bristol businesses remotely.
