Direct answer
What should you know first?
- SEO is the broad foundation: crawlability, indexing, relevance, links, usability and demand-led pages.
- AEO focuses on concise, structured answers for featured results, assistants and question-led retrieval.
- GEO focuses on whether generative systems can retrieve evidence, resolve entities, synthesise claims and cite the source.
- Google states that standard SEO best practices still apply to AI Overviews and AI Mode and that there are no additional technical requirements beyond Search eligibility.
- Run one integrated programme, but report rankings, answer ownership, citations and AI brand accuracy as different outcomes.
Definitions
What do SEO, AEO and GEO mean?
| Discipline | Primary outcome | Typical surface | Core content job |
|---|---|---|---|
| SEO | Relevant organic visibility and qualified visits | Ranked search results and search features | Match demand with useful indexable pages |
| AEO | Accurate direct answer or answer-feature eligibility | Featured snippets, voice and answer interfaces | Express a bounded answer clearly and structurally |
| GEO | Accurate brand inclusion and citation in generated responses | AI assistants and generative search experiences | Provide retrievable claims, evidence and entity clarity |
Decision: The terms describe optimisation lenses, not separate websites. A technically inaccessible page fails all three.
21-point comparison
What are the 21 practical differences between GEO, SEO and AEO?
| No. | Dimension | SEO | AEO | GEO |
|---|---|---|---|---|
| 1 | Primary unit | Page and query | Question and answer block | Claim, entity and cited passage |
| 2 | Discovery goal | Rank for relevant demand | Win a direct answer | Appear accurately in a synthesis |
| 3 | Typical output | Result and visit | Extracted answer | Generated response with source support |
| 4 | Query shape | Keywords and tasks | Explicit questions | Conversational and multi-step prompts |
| 5 | Content entry | Intent-led landing page | Answer-first section | Evidence-rich passage |
| 6 | Technical dependency | Crawl and index access | Eligible indexed content | Retrievable access and parseable content |
| 7 | Heading role | Organise topic and intent | Frame answerable questions | Define extractable claim contexts |
| 8 | Entity role | Relevance and knowledge signals | Clarifies subject of answer | Prevents brand and product confusion |
| 9 | Evidence | Supports trust and usefulness | Supports answer accuracy | Gives the model a citable basis |
| 10 | Schema role | Eligible page understanding and rich results | Supports eligible result types | Machine-readable corroboration, not a citation guarantee |
| 11 | Internal links | Distribute context and authority | Connect related questions | Build a coherent entity and evidence cluster |
| 12 | External links | Reference useful sources | Support concise answers | Expose provenance and verification |
| 13 | Freshness | Depends on query need | Critical for current answers | Critical when models use live retrieval |
| 14 | Format | Pages, tools, media and products | Definitions, steps, lists and tables | Dense facts, comparisons, sources and caveats |
| 15 | Brand language | Category and demand fit | Clear answer ownership | Stable names, products and proof points |
| 16 | Main KPI | Impressions, ranking, clicks and conversions | Answer-feature visibility and assisted actions | Mention rate, citation rate, accuracy and assisted demand |
| 17 | Testing method | Search Console and rank tracking | Question-set result checks | Repeatable prompt suite across assistants |
| 18 | Personalisation effect | Location, device and history can vary results | Answer surface can vary | Model, mode, sources and conversation can vary output |
| 19 | Control | Indexing and snippet directives | Same search controls where applicable | Platform-specific crawler and content controls |
| 20 | Failure pattern | Page not discovered or not competitive | Answer buried or ambiguous | Brand omitted, confused or unsupported |
| 21 | Best team model | SEO, content, web and product | SEO plus editorial structure | SEO, content, PR, data and entity governance |
Decision: The clearest difference is the unit being optimised: SEO often works at page-query level, AEO at question-answer level and GEO at claim-entity-evidence level.
Shared foundation
Where do SEO, AEO and GEO overlap?
- Fast, secure and crawlable pages with useful internal links.
- Clear page purpose and one dominant user intent.
- Accurate titles, headings and descriptive text.
- Original experience, evidence or data that another page cannot simply paraphrase.
- Stable entity names for the company, people, products and services.
- Visible authorship, dates, sources and correction practices.
- Helpful tables, steps, definitions and comparison criteria.
- Consistent claims across the website, profiles and reputable external coverage.
- Accessible HTML and meaningful image alternatives.
- Measurement tied to business outcomes rather than visibility alone.
Google context
Does Google require special GEO optimisation for AI Overviews or AI Mode?
Google says the same foundational SEO best practices apply to its AI features and that no additional technical requirements are needed. A page must be indexed and eligible to appear in Search with a snippet to be considered as a supporting link.
That does not make GEO meaningless. It means GEO work for Google should strengthen useful content, entity clarity, evidence and technical eligibility instead of inventing special markup or files that Google has not requested.
Integrated programme
How should one team run SEO, AEO and GEO together?
- Map commercial topics to real search and buyer questions.
- Resolve crawl, index, rendering, canonical and language issues.
- Create the strongest useful page for each primary intent.
- Add concise answer blocks where a direct answer helps the reader.
- Support important claims with methods, dates and primary sources.
- Make company, author, service and product entities consistent.
- Connect pages into focused internal-link clusters.
- Test search results and a fixed AI prompt set monthly.
- Log ranking, answer, citation and brand-accuracy outcomes separately.
- Refresh the source data or claim when the evidence changes.
Measurement
Which KPIs belong to SEO, AEO and GEO?
| Lens | Leading indicators | Outcome indicators | Common mistake |
|---|---|---|---|
| SEO | Index coverage, impressions, ranking distribution | Qualified organic sessions, leads and revenue | Reporting average rank without intent or conversion |
| AEO | Question coverage, answer-block eligibility | Owned answer appearances and assisted actions | Counting any snippet as a useful answer |
| GEO | Prompt coverage, entity accuracy, source inclusion | Citation rate, qualified referral and influenced demand | Treating one personalised answer as market share |
Decision: Use a fixed query and prompt set, record date and platform mode, and compare change over time. AI outputs are probabilistic and can vary between runs.
Decision
Should you prioritise GEO, SEO or AEO first?
Fix SEO foundations first if important pages cannot be crawled, indexed or matched to clear demand. Add AEO structure when users ask repeatable questions that deserve direct answers. Add GEO testing and evidence work when buyers use AI assistants to shortlist, compare or validate brands.
Most specialist businesses should run the three as one content system. The budget split changes by buyer behaviour, but the page should remain useful to the human who ultimately decides.
Buyer questions
Frequently asked questions
Is GEO replacing SEO?
Is AEO the same as featured-snippet optimisation?
Does schema markup guarantee an AI citation?
How do you measure GEO visibility?
Do llms.txt files improve GEO performance?
Can one article target SEO, AEO and GEO?
Evidence base
Sources and methodology
This guide uses official product documentation, professional bodies and public authorities where available. Comparisons and scores are the agency's editorial framework, not a claim of official endorsement.
- Google AI features and your website Official technical eligibility and SEO guidance for AI Overviews and AI Mode.
- Google guide to generative AI features Official explanation of search foundations and retrieval-augmented generation.
- Google SEO Starter Guide Official SEO definition and core practices.
- Google robots meta specifications Official indexing and snippet controls.
Last reviewed on 4 September 2026. Product features and search behaviour can change, so verify the linked documentation before making a high-risk decision.
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