AEO vs GEO vs SEO: What's Different and What to Do First

SEO, AEO, and GEO all aim to get your content in front of people who search, but each one targets a different surface. SEO (search engine optimization) works to rank a page in a list of search results and earn the click. AEO (answer engine optimization) works to get a specific passage pulled into a direct answer and cited as the source. GEO (generative engine optimization) is the broader work of getting your brand and content used and mentioned by AI systems that generate their own responses, like ChatGPT, Perplexity, Gemini, and Google's AI Overviews.

In practice, they share most of the same groundwork. The differences show up in what you write first, what you measure, and what counts as a win.

Search engine optimization is the practice of improving a page so it ranks higher in a search engine's list of results for a query. Success is measured in impressions, clicks, and average position, all of which Google Search Console reports for free.

SEO still does the heavy lifting for the other two. Google's AI Overviews draw on Google's index, and a page that can't be crawled or indexed isn't available to be cited anywhere. If your pages are stuck in "crawled, currently not indexed," fix that first. Our guide to fixing crawled, currently not indexed walks through it.

Answer engine optimization is the practice of structuring content so an answer engine can lift a passage and cite it as the answer to a specific question. The unit isn't the page. It's the paragraph under a heading.

That changes how you write. You put the answer in the first one or two sentences of a section, define terms in plain language, keep each section understandable on its own, and mark up FAQs and how-tos with schema. A page can rank on page one and still lose the citation to a competitor whose answer is easier to extract.

The AEO founder's guide covers the five levers in depth, and the AEO checklist for SaaS content turns them into 12 checks you can run on your own pages.

Generative engine optimization is the broader practice of improving how generative AI systems use and present your content and your brand in the responses they write. The term was popularized by a 2023 research paper, GEO: Generative Engine Optimization, which studied how content changes affect visibility in AI-generated answers.

GEO looks past a single query. A model might describe your category, compare vendors, or recommend a tool without ever quoting a single passage from your site. What it says depends on what it has read about you, including review sites, forums, comparison pages, and your own pages. That's why GEO work often includes earning mentions on third-party sources, not just editing your own content.

GEO is also measured differently. Instead of a ranking position, you track how often you're mentioned across a set of prompts, compared with competitors. We cover what a reasonable number looks like in AI share of voice benchmarks.

Most of the work counts for all three:

1. Crawlable, indexed pages. No index, no ranking, and usually no citation.
2. Topical depth. A connected cluster of pages on one subject is a stronger signal than a single post, for search engines and for retrieval systems.
3. Clear, sourced claims. Named sources and specific facts are easier to trust and easier to quote.
4. In-body internal links. Links inside the text tell crawlers which pages belong together.

If you're short on time, that list is where to start. It helps across all three surfaces at once.

The tradeoffs are real, but they're smaller than the acronyms suggest.

• Intros. Classic SEO content often opens with context. AEO wants the answer first. Answer-first openings usually work fine for SEO too, so default to them.
• Length. SEO rewards covering a topic fully. AEO rewards sections that stand alone. You can do both: long pages built from short, self-contained sections.
• Off-site work. SEO earns links. GEO also needs mentions, like reviews, community threads, and comparisons, where models look for opinions about you.
• Measurement. SEO has Search Console. AEO and GEO don't have an official equivalent yet, so you combine manual prompt checks, referral traffic, and monitoring tools. Our guide to checking whether ChatGPT cites your site lays out a free monthly routine.

If you have a small team and a few hours a week, do it in this order:

1. SEO health first. Make sure your important pages are indexed and linked from other pages on your site.
2. AEO structure next. Rewrite the opening of each section on your top pages so it answers the question directly.
3. GEO last, and gradually. Track a small set of prompts monthly and earn mentions on the third-party sites that show up in AI answers for your category.

• SEO competes for a click, AEO competes for a citation, and GEO competes for mentions inside AI-generated responses.
• The shared foundation is crawlable, indexed pages, topical depth, sourced claims, and in-body internal links.
• AEO changes how you write: answer first, self-contained sections, schema on FAQs and how-tos.
• GEO reaches beyond your own site to the third-party sources models read about you.
• Only SEO has an official free measurement tool today. AEO and GEO rely on prompt checks, referral traffic, and monitoring tools.