Answer engine optimization is getting your brand named and your pages cited when someone asks an AI assistant a question, rather than when they search. It overlaps with SEO but does not follow it: sites with no organic traffic get cited, and sites that rank well often do not.
Three names are circulating for the same work - answer engine optimization, generative engine optimization, LLM SEO. The search data suggests the market has not settled: AEO and "AI SEO tools" both run around 2,400 searches a month in the US, LLM SEO around 880, while "generative engine optimization" returns no measurable volume at all despite being the phrase most vendors now use.
Why ranking and citation are different things
A search engine returns a ranked list and you click. An assistant retrieves a handful of sources, synthesises an answer, and cites some of them. The retrieval step is query-specific and much shallower than a full index scan, so the winner is often whichever page most directly and unambiguously answers that exact question - not the page with the most authority.
This is why the two move independently, and why measuring one tells you very little about the other.
What you can actually influence
| Lever | Why it matters | How controllable |
|---|---|---|
| Being in the index the assistant retrieves from | Nothing else works if you are not retrievable | Fully - submit and verify |
| Matching the question's wording | Retrieval is lexical before it is semantic | Fully - page titles and headings |
| Being liftable as a short passage | Assistants cite what can be quoted cleanly | Fully - answer-first structure |
| Saying something no other page says | No reason to cite the fortieth restatement | Fully - original data or a clear position |
| Being mentioned elsewhere | Correlated in industry research, not proven causal | Barely - you cannot manufacture mentions |
| Domain authority | Weakly related at best | Not worth optimising for this purpose |
Why authority matters less than people assume
The uncomfortable finding, repeatedly, is that assistants cite pages with no search authority at all. It is routine to find a cited source with zero organic traffic, zero ranking keywords and a domain rating close to nothing. Whatever is driving retrieval, it is not the same signal that drives rankings.
How to know whether any of it worked
Measure a rate, not an event. Assistant answers are not deterministic: ask the same question five times and you will get overlapping but different source lists. A single check that shows your brand proves nothing, and a single check that does not is equally uninformative. The tools in our ranking exist to run that sampling repeatedly so the noise averages out.
Fifteen tracked prompts is enough to learn whether you appear at all. Running a programme against competitors usually needs 50 to 150.