SEO gets you ranked in search results; AEO gets you chosen as the direct answer; GEO (generative engine optimization) gets you cited inside AI-generated responses; LLMO gets your brand into the knowledge LLMs draw on. They are layers of one strategy, not competing options. Here is what each does, and which your business actually needs first.
The four disciplines at a glance
| Discipline | Target | Win condition | Core tactics |
|---|---|---|---|
| SEO | Google / Bing results pages | Rank in top positions | Keywords, backlinks, technical health |
| AEO | Answer boxes, voice, AI Overviews | Be the selected answer | Q&A structure, FAQ schema, concise answers |
| GEO | ChatGPT, Gemini, Perplexity, AI Overviews | Be cited as a source | AI-crawler access, llms.txt, answer-first content, statistics |
| LLMO | LLM training & retrieval data | Be part of what the model knows | Entity building, authoritative mentions, consistent brand facts |
Which should you invest in first?
If your website has technical problems or thin content, start with SEO — everything else builds on it. If you already rank but get skipped for featured answers, add AEO. If your buyers use ChatGPT or Perplexity to shortlist vendors (increasingly true in B2B and high-value services), GEO delivers the fastest visible wins. LLMO is the long game: it compounds as models retrain and retrieve.
Where they overlap
All four reward the same foundations: crawlable pages, clear structure, real expertise, and schema that matches visible content. A page written to answer one question well — answer first, evidence second, FAQ at the end — serves SEO, AEO and GEO simultaneously. That is why we build all four into every project rather than selling them separately; see our GEO/AEO services.
The mistake to avoid
Do not buy “AI SEO” as a bolt-on to a site that blocks AI crawlers or hides content behind JavaScript. Check robots.txt allows GPTBot, ClaudeBot and PerplexityBot, and confirm your key answers exist as visible text. A quick scan with IndexGraph.ai shows which layer is actually holding you back.
FAQ
Is GEO replacing SEO?
No. AI engines still lean heavily on well-ranked, crawlable pages to build answers. GEO extends SEO to the AI layer; abandoning SEO would weaken your GEO.
What is the difference between AEO and GEO?
AEO targets being selected as a direct answer (featured snippets, voice, answer boxes). GEO targets being cited inside longer AI-generated responses. Tactics overlap, but GEO adds AI-crawler access and citation tracking.
Do small businesses need all four?
Start with SEO fundamentals plus GEO basics (crawler access, llms.txt, answer-first pages). Add dedicated AEO and LLMO work as you grow — the foundations already serve them.
Not sure which layer you are missing? Ask us for a free assessment.
