GEO vs SEO vs AEO, what is actually different
Search optimisation has changed many times over the past two decades.
First we had SEO, which focused on ranking pages in search engines.
Later the industry started discussing AEO, short for answer engine optimisation. The idea was to structure content so it could appear in featured snippets and voice answers.
Now a third term is appearing more often.
GEO, or Generative Engine Optimisation.
At first glance these terms can feel confusing. Many businesses are unsure whether GEO replaces SEO, or whether it is just a new name for the same practice.
The truth is simpler.
SEO, AEO, and GEO are related but different layers of search visibility.
If you want to improve your visibility in AI driven search, you should understand how each one works.
If you are new to the concept of generative search, our full introduction to Generative Engine Optimisation explains how AI systems build answers and why GEO matters.
Why new terms are appearing
Search technology has changed dramatically.
Originally, search engines simply indexed web pages and ranked them based on relevance and authority.
The experience looked like this.
- User types a query
- Search engine returns links
- User chooses one result
Today the process often looks different.
Many platforms now generate direct answers.
Examples include:
- Google AI Overviews
- Bing AI answers
- ChatGPT search responses
- AI summaries inside browsers
These systems combine information from many sources and produce a new answer.
Google explains this approach in its documentation on AI search features, which describes how generative systems retrieve and summarise information from the web.
https://developers.google.com/search/docs/appearance/ai-features
Because the experience changed, the optimisation strategies also changed.
What SEO means today
SEO stands for search engine optimisation.
The original goal of SEO was simple.
Rank web pages in search engines.
This still matters.
SEO focuses on several core areas.
Crawlability
Search engines must be able to access your pages.
If pages cannot be crawled, they cannot rank.
Tools like our crawlability checker can identify common issues.
Indexation
Search engines must decide which pages belong in their index.
You can review this using tools such as our indexed pages checker.
Keywords
SEO traditionally focused on matching pages to search queries.
Content was optimised around specific phrases.
Links
Links remain one of the strongest ranking signals.
They help search engines understand authority and reputation.
Technical performance
Fast websites and good user experience improve rankings and engagement.
Our website speed tool helps diagnose performance issues.
SEO therefore remains essential.
Without SEO foundations, neither AEO nor GEO can work properly.
What AEO is
AEO stands for answer engine optimisation.
The concept appeared when search engines began showing featured snippets, knowledge panels, and voice answers.
Instead of only returning links, search engines sometimes answered questions directly.
For example, if someone searched:
what is technical seo
Google might show a short paragraph explaining the concept.
That paragraph is usually extracted from a web page.
AEO focuses on increasing the chances that your content becomes that answer.
Common AEO techniques include:
- writing clear definitions
- answering questions directly
- structuring content with headings
- adding FAQ sections
Google's guidance on helpful content highlights similar principles.
https://developers.google.com/search/docs/fundamentals/creating-helpful-content
AEO is therefore focused on answer extraction.
However it still operates within traditional search engine results.
What GEO is
GEO stands for Generative Engine Optimisation.
The key difference is that generative engines create new responses rather than simply extracting text.
Instead of displaying a snippet, the system generates a complete explanation.
This explanation may combine information from multiple sources.
For example:
- a documentation site
- a blog article
- a research paper
- an industry report
The system synthesises these sources into one answer.
If your content is considered trustworthy, it may appear as a citation or reference.
Our guide on how to win in generative search explores this process in more detail.
The main differences
The easiest way to understand these three approaches is to compare them side by side.
| Focus | SEO | AEO | GEO |
|---|---|---|---|
| Main goal | rank pages | answer questions | become a trusted source |
| Search experience | link results | snippets and voice answers | generated responses |
| Optimisation focus | keywords and links | clear answers | trustworthy information |
| Output | page ranking | extracted snippet | AI generated summary |
| Visibility metric | clicks | snippet visibility | citations and mentions |
Each approach builds on the previous one.
SEO created discoverable websites.
AEO improved answer extraction.
GEO focuses on trustworthy information used by AI systems.
Why GEO matters now
The growth of AI driven search is changing how people discover information.
Users increasingly ask complete questions such as:
how do I improve website speed for ecommerce
Instead of showing ten links, AI systems often generate a detailed response.
The user may receive the answer immediately.
This behaviour creates two important changes.
Clicks may decrease
Some users never visit a website because they receive the answer instantly.
This trend is often described as the zero click search era.
Our article on the zero click search era explains the impact on traffic and measurement.
Sources become more important
Even if users do not click, the AI system still relies on sources.
Websites that consistently provide reliable information become trusted references.
This is the core goal of GEO.
Where SEO still matters
Some people assume GEO replaces SEO.
That assumption is incorrect.
SEO remains essential for several reasons.
Search engines still power retrieval
AI systems still rely on search infrastructure to discover sources.
If your pages cannot be indexed, they cannot be retrieved.
Technical signals remain important
Factors such as crawlability, page structure, and internal linking still influence whether your content is discovered.
For example, our article on XML sitemaps explains how search engines locate new pages.
Authority signals still matter
Links, brand mentions, and reputation still influence credibility.
Without these signals, AI systems may prefer other sources.
SEO therefore provides the foundation for GEO.
Where AEO still matters
AEO techniques also remain valuable.
Generative systems still favour content that answers questions clearly.
Helpful patterns include:
- definition sections
- step by step guides
- concise explanations
Pages that are difficult to summarise are less likely to be used.
This is why writing structure remains important.
The new priorities introduced by GEO
GEO introduces several priorities that were less important in earlier SEO strategies.
Information clarity
AI systems prefer content that explains ideas clearly.
Simple language often performs better than complex writing.
Verifiable claims
Content that includes evidence is more trustworthy.
Examples include:
- references
- research data
- case studies
Consistent entity signals
AI systems attempt to identify organisations and authors.
Consistency across the web helps confirm credibility.
This includes:
- consistent brand descriptions
- verified profiles
- author pages
Structured knowledge
Content organised around clear topics is easier to reuse.
For example:
- glossaries
- knowledge hubs
- tutorials
Our marketing glossary is one example of a structured knowledge resource.
A practical example
Consider a business that offers digital marketing services.
A traditional SEO strategy might focus on ranking for a keyword like:
seo agency uk
The goal would be ranking high in search results.
An AEO strategy might focus on answering questions such as:
- what does an SEO agency do
- how much does SEO cost
These answers might appear in featured snippets.
A GEO strategy would go further.
It would focus on becoming a trusted source when AI systems answer broader questions such as:
- how to grow organic traffic
- how search marketing works
- how to improve website visibility
Instead of targeting one keyword, the goal becomes topical authority.
The importance of internal linking
Internal linking helps both search engines and AI systems understand relationships between pages.
A strong internal structure might include:
- pillar pages
- supporting guides
- glossary terms
- case studies
For example, this article connects to:
Our article on internal linking explains how to structure these relationships.
Measuring GEO performance
One of the biggest challenges with GEO is measurement.
Traditional SEO metrics include:
- rankings
- impressions
- clicks
GEO requires additional signals.
Examples include:
- brand mentions in AI responses
- citation visibility
- increased branded search
- content reuse across platforms
Measurement methods are still evolving.
However tools that track visibility across multiple search environments are becoming increasingly useful.
A simple strategy for businesses
If you want to prepare your website for AI driven search, focus on three priorities.
Build strong SEO foundations
Ensure your website is technically sound.
This includes:
- crawlable pages
- fast loading speeds
- clear page structure
Create structured knowledge content
Publish guides, definitions, and explanations.
These formats are easier for AI systems to extract.
Build brand credibility
Develop signals that confirm expertise.
Examples include:
- author profiles
- case studies
- references
- mentions in reputable publications
These signals increase the chance that AI systems will trust your content.
The future relationship between SEO, AEO, and GEO
The most realistic future is not one discipline replacing another.
Instead we will likely see an integrated model.
SEO
Ensures your content can be discovered.
AEO
Ensures your content answers questions clearly.
GEO
Ensures your content becomes a trusted source used by AI systems.
Businesses that combine these approaches will gain the strongest visibility.
Next steps
Understanding the difference between SEO, AEO, and GEO is the first step.
The next step is evaluating your website.
A structured GEO audit can reveal:
- whether your content can be used in AI answers
- where authority signals are missing
- which pages should be improved first
You can also explore our full Generative Engine Optimisation services to build a long term AI search strategy.
Search is changing quickly.
Websites that adapt early will become the sources that AI systems trust.
References
-
Google Search Central. AI features and your website
https://developers.google.com/search/docs/appearance/ai-features -
Google Search Central. Creating helpful content
https://developers.google.com/search/docs/fundamentals/creating-helpful-content -
OpenAI. Publishers and developers FAQ
https://help.openai.com/en/articles/12627856-publishers-and-developers-faq -
Bing Webmaster Guidelines
https://www.bing.com/webmasters/help/webmaster-guidelines-30fba23a
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Kiril Ivanov
Managing Director & Performance Lead
Kiril leads strategy and execution at TwoSquares, combining technical engineering backgrounds with advanced performance marketing. Specialising in programmatic SEO, Google Ads scripting (API), and full-funnel paid media architecture, he builds systems that turn search visibility into measurable revenue for UK brands.
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