GEO vs SEO vs AEO: A Founder's Guide to Getting Discovered in 2026

For fifteen years, "SEO" meant one thing: rank on Google. That world is gone. Discovery now happens across traditional search engines, AI answer engines, and generative chat interfaces — each with its own rules. Founders who treat them as one bucket leave traffic on the table.

This guide breaks down the three disciplines, how they overlap, and what a micro-SaaS team should actually do.

The Three Discovery Channels

They are not competitors. They are layers. A page that wins on all three gets cited by an AI, summarized in a snippet, and ranked in blue links — three shots at the same visitor.

Why GEO Is the New Front Line

When someone asks Perplexity "best tool to generate JSON-LD schema," the answer engine reads a handful of sources and cites two or three. If your app is not in that set, you do not exist — regardless of your Google ranking.

Generative engines do not crawl the web the way Googlebot does. They look for:

1. Machine-readable structure — llms.txt, JSON-LD, clean semantic HTML.
2. Quotable answer blocks — short paragraphs that directly answer a question.
3. Topical authority — consistent coverage of a niche over time.

The shift: SEO optimizes for a click. GEO optimizes for a citation. A citation drives a mention, a mention drives a visit, and a visit drives a trial.

What Each Channel Actually Rewards

SEO rewards pages that deserve to rank

• Fast load times (Core Web Vitals).
• Descriptive title tags and meta descriptions.
• Internal linking and a clean sitemap.
• Backlinks from relevant sites.

AEO rewards content shaped like an answer

• A direct answer in the first 40–60 words.
• Question-based headings (## How do I …).
• Schema markup that labels the Q&A (FAQPage, HowTo).

GEO rewards content that is easy to ingest and trust

• A llms.txt file that maps your site for AI crawlers.
• Consistent entity naming (your app name, category, pricing).
• Structured data that disambiguates what you are.

The Practical Playbook for Micro-SaaS

You do not need a content team. You need a system. Here is the minimal stack that covers all three:

1. A sitemap — auto-generated from your routes, submitted to Search Console.
2. JSON-LD structured data — SoftwareApplication, Organization, BlogPosting, FAQPage.
3. An `llms.txt` file — a concise map of your site for generative engines.
4. An RSS feed — for changelog syndication and AI ingestion.
5. Answer-shaped content — every article opens with a direct answer.

SpaceZero bakes all five into the build. The Discovery Pack generates your sitemap, llms.txt, llms-full.txt, RSS, and JSON-LD at build time from a single route config — so you write content, not infrastructure.

The One-Sentence Takeaway

SEO gets you ranked, AEO gets you quoted, and GEO gets you cited by the AI that increasingly answers the question before the user ever sees a link.

Build for all three, or build for none.