SEO as the foundation for AEO
SEO is the foundation of answer engine optimization (AEO) because answer engines mostly retrieve from search indexes before they write an answer. Google says SEO best practices remain relevant for AI Overviews and AI Mode, with no special requirements, and Bing says the same crawling, indexing and ranking foundation supports Copilot. If a page is not crawlable, indexable and clearly about the right entities, it is unlikely to be cited.
What is the relationship between SEO and AEO?
Answer engine optimization is the practice of making content easy for AI answer engines to retrieve, trust and cite. Google’s position is direct: “From Google Search’s perspective, optimizing for generative AI search is optimizing for the search experience, and thus still SEO.”[1] Officially documented Its AI features page adds that “there are no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary.”[2] Bing says the same foundation of crawling, indexing and ranking supports Copilot and grounding.[3] AEO.wiki compares the terms in AEO vs SEO, GEO and LLMO.
Why do answer engines depend on search?
Most answer engines use retrieval-augmented generation: they search an index, pull relevant passages and write an answer grounded in them. Google says its AI features use grounding and query fan-out over the Search index.[1] Officially documented AEO.wiki explains the pipeline in how answer engines work and engine by engine in Google AI Overviews and AI Mode and ChatGPT search.
Which SEO layers carry over to AEO?
| SEO layer (this wiki) | Why it matters for answers | AEO.wiki page |
|---|---|---|
| Crawling | Answer engines can only cite what their crawlers can fetch | AI crawlers |
| Indexing | Google requires a page to be indexed and snippet-eligible to be a supporting link[2] | AI Overviews |
| Technical SEO | Fast, server-rendered pages are easier to retrieve | Rendering and access |
| On-page SEO | Answer-first passages are easy to extract and quote | Content structure |
| Links and mentions | Third-party corroboration signals which sources to trust | Brand mentions |
| Local SEO | Google says to keep Business Profile data current for AI features[2] | Local AEO |
| Structured data | Clarifies entities; must match visible text[2] | Structured data |
| E-E-A-T | Clear authorship and sources support trust | E-E-A-T |
Where do entities fit between SEO and AEO?
An answer engine has to decide which business, person or product a question is about before it can answer. Entity work (a clear entity home, consistent facts, sameAs links and a Wikidata item where notable) is the bridge: it is ordinary SEO hygiene that also reduces the chance of an AI answer confusing you with someone else. Practitioner practice See entities in AI search and AEO.wiki’s entities page.
What does AEO add on top of SEO?
- Monitoring citations and mentions in AI answers, not just rankings (measuring AI visibility).
- Decisions about AI crawler access for search versus training (AI crawlers and robots.txt).
- Presence on third-party sources that answer engines draw on (third-party presence).
- Keeping facts fresh (freshness).
What does AEO not need?
Google says you do not need new machine-readable files, AI text files or special schema.org markup for its AI features, and its generative AI guide says Google Search ignores llms.txt.[2][1] Officially documented AEO.wiki tracks the evidence in llms.txt and AEO myths.
What order should you work in?
- Fix crawling, indexing and technical basics (SEO fundamentals).
- Structure each page answer-first with clear headings.
- Build your entity: entity home, schema, profiles (build your entity).
- Earn corroboration: reviews, citations, press, Wikidata where eligible.
- Measure both search and AI visibility; work through AEO.wiki’s AEO checklist and this wiki’s entity SEO audit.
Frequently asked questions
Is AEO different from SEO?
AEO focuses on being cited in AI answers rather than ranked in a list, but Google says optimizing for its AI search features is still SEO. The foundations are the same.
Do I need special markup or llms.txt for AI Overviews?
No. Google says no special schema, AI text files or machine-readable files are needed, and that Google Search ignores llms.txt.
Should I do SEO or AEO first?
SEO first. Answer engines mostly retrieve from search indexes, so a page that is not crawlable and indexed is unlikely to be cited.
See also
References
Pages accessed September 29, 2026 unless a date is given. See all sources and our editorial policy.
- ^ "Optimizing your website for generative AI features on Google Search". Google Search Central. Added May 15, 2026; last updated July 10, 2026.
- ^ "AI features and your website". Google Search Central. Last updated December 10, 2025.
- ^ "Bing Webmaster Guidelines". Microsoft Bing Webmaster Tools.