The three disciplines in one paragraph each
SEO, search engine optimization, earns your pages positions in classic ranked results. Its scoreboard is rankings and organic traffic, and its levers are content, technical health and links.
GEO, generative engine optimization, earns your brand visibility across generative engines like ChatGPT, Gemini, Claude and Perplexity. Its scoreboard is mention rate and share of voice across assistants, and its distinctive levers are entity consistency and third-party corroboration.
AEO, answer engine optimization, earns your brand and facts a place inside specific direct answers, whether from a standalone assistant or an answer box in search. It is effectively GEO viewed at the level of one question at a time, with answer-first content and schema doing the heaviest lifting. In practice, GEO and AEO overlap almost completely.
Where they overlap, where they split
All three reward the same foundation: crawlable, well-structured pages that genuinely answer questions, plus earned authority. The split is in emphasis. SEO can win with comprehensiveness; GEO and AEO demand directness, because assistants quote openings. SEO tolerates messy entity data; GEO and AEO punish it. SEO measures one index; GEO and AEO measure four assistants that disagree.
The practical consequence: a strong SEO program is roughly two thirds of a GEO/AEO program, and the remaining third, moments instead of keywords, corroboration instead of links alone, answers instead of articles, is where the 2026 advantage lives.
Metrics for each, on one dashboard
SEO: rankings, clicks, conversions. GEO: mention rate, sentiment and share of voice across the four assistants, judged monthly. AEO: first-recommendation rate and citation presence on your specific money questions. Report all three together, because a brand can hold rankings while losing the answer layer, and neither classic dashboard will show it.
Running all three as one program
Sequence beats separation. Baseline how the four assistants answer your top buying moments, fix the entity and accuracy issues that baseline exposes, publish answer-first pages for the moments that pay, earn citations in the sources assistants keep citing, and take the classic ranking gains as a byproduct. That single loop is SEO, GEO and AEO at once, and it is how Aethon runs engagements, with Contextual AI Presence Mapping© setting the priorities. The free audit produces the baseline across all four assistants with screenshots.
