SEO gets your page ranked in the list of results. AEO gets your content cited inside the AI-generated answer. They share the same foundation, a crawlable, trustworthy, well-structured page, but they are measured differently and optimised for two different readers: a person scanning links, and a model assembling an answer.
What does each one mean?
Search engine optimisation (SEO) is the long-standing practice of earning visibility in the classic list of search results, through relevant content, a fast and crawlable site, and authority earned over time.
Answer engine optimisation (AEO) is the newer practice of getting your content extracted and cited by AI answer engines such as ChatGPT, Google AI Overviews, Perplexity and Gemini. If you want the full picture, start with what AEO is and how it works.
Where do they overlap?
More than most people expect. The foundation is identical: a page has to be crawlable, indexed, fast, genuinely helpful, and trustworthy before it can rank or be cited. Google is unusually blunt about this. Its own guidance on AI features and your website states that there are "no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary", and that you do not need to create AI text files or special markup. In other words, AEO is not a separate discipline bolted onto SEO. It is good SEO, plus a few habits that make your content easy to lift and worth quoting.
Where do they differ?
The overlap is the foundation. Above that line, the goal, the unit that wins, and the way you measure success all change.
| Dimension | SEO | AEO |
|---|---|---|
| Goal | Rank a page in the results | Be cited as a source in the answer |
| Unit that wins | The page or URL | The individual passage or claim |
| The reader | A person scanning links | A model assembling an answer |
| What tips it your way | Relevance, links, page experience | Extractable structure, evidence, authority, freshness |
| How you measure | Rankings, clicks, impressions | Citations and share of voice across engines |
| Where the traffic goes | Click through to your page | Often answered in place; the citation is the win |
Why do you need both?
Do only SEO and you can rank well yet watch the AI answer above your link get built from a competitor. Chase only AEO without the foundations and there is nothing for an engine to crawl, trust or cite. SEO makes you eligible; AEO makes you quotable.
Trust does the heavy lifting. Google's guidance on people-first content calls trust the most important part of E-E-A-T and specifically rewards clear authorship and transparent sourcing, so citing your sources, adding real data and naming a real author all make your content more likely to be trusted and quoted. Keyword stuffing does the opposite.
How do you do both well?
One page, two jobs. Get the foundations right, then layer the AEO habits on top:
- Make sure every page is crawlable, indexed and fast, the SEO foundation.
- Open each page with a direct 40 to 60 word answer to its core question.
- Use headings that mirror how people ask, and turn comparisons into tables.
- Back claims with dated figures and link the primary source.
- Attribute content to a named author and show a visible last-updated date.
- Keep structured data accurate and internal links strong.
- Measure both: rankings and clicks for SEO, citations and share of voice for AEO.
Next, see the engine-specific version of this: how to get cited in Google AI Overviews. Limecube runs this loop for you, tracking your citations across engines and writing source-ready content; the features tour shows how.