SEO vs AEO vs GEO: What Each One Does and Which You Need

Short answer: SEO gets your website ranked in Google's list of links. AEO gets your words quoted as the direct answer. GEO gets your business named and cited when someone asks ChatGPT, Perplexity, Gemini or Google's AI Overview for a recommendation. A small business in 2026 needs all three, and the good news is that one well-built website does all three at once.

SEO — Search Engine Optimization

SEO is the original discipline: make a site fast, crawlable and clearly about the things your customers search for, then earn links and reviews that tell Google you are trusted. The reward is a position in the ten blue links and the local map pack.

It still matters more than anything else on this page, because both answer engines and AI assistants lean on the same signals. A page Google cannot crawl is a page ChatGPT is unlikely to cite.

AEO — Answer Engine Optimization

AEO is about the answer box, not the list. Featured snippets, People Also Ask, and voice assistants like Siri and Alexa all read one answer out of one page. AEO shapes your content so that page is yours:

• Headings phrased as the questions buyers actually ask.
• The answer in the first one or two sentences under each heading.
• FAQ sections marked up with FAQ schema.
• Specific facts — prices, hours, service areas — stated plainly, not implied.

GEO — Generative Engine Optimization

GEO is the newest of the three. When someone asks an AI assistant "who's the best roofer in Boca Raton?", the model assembles an answer from what it has learned and what it can retrieve, and it cites a few sources. GEO is the work of making your business one of them:

• A clear entity. The same business name, address, phone and description everywhere — your site, Google Business Profile, directories, social profiles.
• Structured data. LocalBusiness, Service and Review schema so a machine can read facts instead of guessing.
• Quotable content. Short, confident, factual paragraphs an AI can lift whole.
• Open doors. A robots.txt that lets GPTBot, ClaudeBot and PerplexityBot in, and an llms.txt that tells them what matters.

Side by side

• SEO — wins a ranking. Measured in positions and clicks.
• AEO — wins the quoted answer. Measured in snippets and voice results.
• GEO — wins the recommendation. Measured in AI mentions and citations.

Which one do you need?

All three, and you do not buy them separately. They are layers of the same build: SEO is the foundation, AEO is how the pages are written, GEO is how the business is described to machines. Bolting AI optimization onto a slow, template site rarely works; building the site for it from the first page does.

That is exactly what I build: a complete website with SEO, AEO and GEO in place on launch day, for a flat $2,500. Definitions for every term here are in the glossary.