What Is GEO? A Plain-English Guide for Agencies Reselling AI Search Services

GEO stands for generative engine optimization. It's the work of making a website easy for AI search tools to read, trust and quote. Think Google's AI Overviews and AI Mode, plus ChatGPT, Perplexity and Gemini. When a client asks you whether they "show up in AI," GEO is the thing you'd be selling them.

It isn't a new discipline. It's SEO with a second scoreboard. You still care where a page ranks. You also start asking whether an AI tool cites the client when someone asks it a question the client should own.

Here's how we explain it to partner agencies, what the work actually involves, how you can measure it today and how to package it without promising things nobody can deliver.

A GEO explanation you can paste into a proposal

Feel free to lift this word for word:

"Google used to show a list of links and let people pick one. Now it often writes an answer first and links to a handful of sources inside it. ChatGPT and other AI tools do the same thing. GEO is the work that makes your website one of those sources. It's built on the same foundation as SEO: a healthy site with genuinely useful content. The difference is extra weight on clear answers, proof that you know your stuff and consistent information about your business across the web."

Where the term came from

"GEO" took off after a 2023 paper from researchers at Princeton and IIT Delhi, later published at KDD 2024 (GEO: Generative Engine Optimization). They built a test engine that answered questions from the top five Google results, then measured how visible each source was in the AI-written answer.

What they found lines up with what good SEO teams already do. Keyword stuffing didn't help; it performed at or below the unoptimized baseline. Adding citations, relevant quotes and specific statistics helped the most, improving visibility by up to roughly 40% on their main metric. And pages that ranked lower in the original results gained the most from those changes.

Don't lean on the exact numbers. The tests ran on GPT-3.5 and a lab version of a generative engine, and real AI search products have moved a long way since. The lesson that's held up is simple. AI systems favor content that's specific, sourced and easy to pull a clean answer from.

GEO, SEO, AEO and AIO

You'll hear all four. Here's how we sort them:

• SEO (search engine optimization): getting pages crawled, indexed and ranked.
• AEO (answer engine optimization): shaping content to be the direct answer in featured snippets, voice results and AI Overviews.
• GEO (generative engine optimization): earning citations inside AI-generated answers, including ChatGPT, Perplexity, Gemini and Google AI Mode.
• AIO (artificial intelligence optimization): a catch-all some analysts use for everything above.

In practice they overlap so much that most agencies use AEO and GEO interchangeably. We build both into SEO programs instead of selling them as a separate line item, and we'd suggest you do the same.

Google's own documentation backs that up. Its guide to AI features and your website says SEO best practices still apply to AI Overviews and AI Mode, that there are no additional requirements to appear in them and that you don't need special AI text files or special schema. To show up as a supporting link, a page has to be indexed and eligible to appear with a snippet. So if a client's technical SEO is broken, calling the fix "GEO" won't change anything.

What the work actually includes

When we deliver AI SEO and GEO services for partner agencies, most of the effort lands in six places. None of it is exotic. What shifts is where the hours go.

Technical eligibility

Crawlability, indexation, Core Web Vitals and mobile readiness. We also check that robots.txt or a CDN isn't quietly blocking Googlebot. A page that can't show a snippet can't be a supporting link in AI Overviews or AI Mode, full stop.

Answer-first content built around real questions

AI Mode queries run long. Google says they're three times longer than traditional searches on average (Google, October 28, 2026). Longer questions reward the page that answers the specific version near the top and then backs it up.

So we write question-based headings, put a short direct answer under each one and follow it with what a buyer actually needs: cost ranges, steps, comparisons.

Proof of experience (E-E-A-T)

Real bylines with credentials. First-hand detail. Named sources and visible update dates. A page that just summarizes what already ranks gives an AI system no reason to pick it over the original. That's why our team writes and edits client content. We use AI tools for gap analysis and keyword mapping, but not to publish.

Structured data that matches the page

We add JSON-LD for articles, FAQs, products, reviews and local businesses where it fits. Google is clear that no special schema is required for AI features and that markup should match the visible text. Schema removes doubt about who the business is and what it sells. It's not a shortcut, and we don't pitch it as one.

Consistent business information off the site

AI answers pull from more than the client's own pages. Google Business Profile, Bing Places, directory listings, reviews and mentions on trusted sites all shape how a business gets described. That's why link building and citation cleanup still belong in a GEO scope.

Freshness

Old prices, staff who left two years ago and broken links make a page risky to quote. Refreshing the pages that matter most is part of the job, not an extra.

How to measure GEO right now

Be straight with clients about what can and can't be measured yet.

Search Console's generative AI performance report. On August 31, 2026, Google rolled out its generative AI performance report to all websites. It shows impressions in AI Overviews and AI Mode, grouped by page, country, device and date. It doesn't show clicks or queries. You can tell a client how often a page appeared in AI answers. You can't tell them which questions triggered it or how many visits followed.

What an AI impression might be worth. On October 30, 2026, Search Engine Roundtable reported a small test by Cyrus Shepard. He used Search Console's opt-out control to pull a site out of AI Overviews and AI Mode, and estimated roughly a 0.9% click-through rate on AI impressions. The surprising part: regular organic clicks dropped too while the site was opted out. That's one site and a small sample, so don't quote it as a benchmark. It does hint that AI visibility might help clicks elsewhere on the page.

Leads, not just sessions. The white-labeled SEO reports we send partners cover rankings, organic traffic and conversions, with call tracking by source for clients who get leads by phone. We're adding AI citation tracking as the tools get good enough to trust. We'd rather wait than put a number in front of your client that the tools can't back up.

Should clients opt out of AI Overviews?

Google now has a Search generative AI control in Search Console. It removes a site's links and content from AI Overviews, AI Mode and generative AI features in Discover. Google says the setting isn't used as a ranking signal for the rest of Search.

For most local and service businesses, we'd leave it alone. Google notes that when a site is excluded, content from other sites still shows up in those features and may look similar. In plain terms, a competitor gets cited instead. Shepard's test points to a second cost, too: fewer regular organic clicks while the site was opted out.

How to package GEO for your clients

Here's what's worked for us running SEO fulfillment for 120+ agencies.

1. Put it inside your SEO tiers. GEO runs on the same technical and content foundation. A higher SEO tier that adds question-based content, schema and AI impression reporting is a lot easier to explain than a standalone "AI fix."
2. Never guarantee citations. Google says indexing and serving aren't guaranteed even when a page meets every requirement. Sell the work and the reporting. Don't sell a placement.
3. Start with the money pages. Service and location pages bring in the leads. Informational posts are the most exposed to zero-click answers, so judge them on whether they get cited and whether they support those pages.
4. Set a realistic timeline. Treat it like SEO. You'll usually see new AI impressions on target pages before you see any change in leads, and clients should know that going in.
5. Plan paid search alongside it. On October 28, 2026, Google expanded ads in AI Mode to 10 more countries and launched ads in follow-up questions in the U.S. Clients who leaned on informational traffic may want a Google Ads budget on high-intent terms while organic adjusts.

If you're still working out pricing and positioning, our guide to becoming an SEO reseller walks through it. For background on how AI Mode is changing traffic, read Google AI Mode Is Live Across the U.S.

How we deliver GEO under your brand

You bring the client and set the price. We scope the work, run it and send a white-labeled report every month that you can forward as your own. Our team has spent 15+ years running agencies, and our leadership has worked in SEM and SEO since the early 2000s. Terms are month-to-month with no minimum number of clients. Partners with more than five clients can get a Slack Connect channel with our team.

Frequently asked questions about GEO

What does GEO stand for?

Generative engine optimization. It's the practice of making content easy for AI search tools, such as Google AI Overviews, AI Mode, ChatGPT and Perplexity, to understand and cite in their answers.

Is GEO different from SEO?

It's built on SEO. Google says there are no extra technical requirements for AI Overviews or AI Mode beyond being indexed and eligible to show with a snippet. GEO puts more weight on direct answers, proof of expertise, accurate structured data and consistent business information across the web.

Can my agency resell GEO under its own brand?

Yes. With a white label partner, the fulfillment team does the work and you deliver it under your agency's name, monthly reports included.

How do you measure GEO results?

Start with Search Console's generative AI performance report. It shows AI Overview and AI Mode impressions by page, country and device, but no clicks or queries. Pair it with form fills, calls and branded search trends so the client sees business results and not just visibility.

Do clients need an llms.txt file or special schema to show up in Google's AI answers?

Not for Google. Its documentation says you don't need new machine-readable files, AI text files or special schema.org markup to appear in AI Overviews or AI Mode. Standard structured data that matches the visible page is still worth having.

Want to offer GEO without hiring for it?

If clients are asking about AI search and you'd rather not build a technical SEO team to answer them, book a discovery call. We'll look at one client site, show you where it stands and price the work so you can resell it at your own margin. You can also start with our pricing page.