Query fan-out is how Google's AI search features research a question. The system splits one question into many related searches. Then it combines the results into one answer with links.
That matters if you want your pages to show up as those links. Customers rarely ask just one thing. This guide explains fan-out in plain words and how to cover the follow-ups.
Reporting note: We checked Google's public posts and documentation on October 2, 2026. AI features change often. This guide can't promise a link, a citation, or a ranking.
Key takeaways
- Query fan-out turns one question into many related searches
- Pages only need to be indexed and eligible for a snippet
- Answer customer follow-ups on the page where they fit
- Skip llms.txt files, chunking, and special AI markup for Google
- Check the new multimodal filter if photos drive your sales
What is query fan-out?
Google described query fan-out when it announced AI Mode on March 5, 2025. AI Mode runs several related searches at the same time. Those searches cover subtopics and different data sources.
Google's AI features page says AI Overviews and AI Mode may both use it. While it writes a response, the system finds more supporting pages. Google says this lets it show a wider, more varied set of links.
Google's optimization guide gives a lawn example. Someone asks how to fix a lawn full of weeds. Fan-out searches might cover weed killers, chemical-free removal, and prevention.
What has Google said about fan-out so far?
Google has described fan-out in several posts, including its Google I/O update from May 2025. The table sums up each source in plain words.
Scroll sideways to read the full table.
| Google source | Date | What it says |
|---|---|---|
| AI Mode launch post | March 5, 2025 | AI Mode runs related searches at once across subtopics and sources |
| Google I/O update | May 20, 2025 | AI Mode splits a question into subtopics. Deep Search can run hundreds of searches. |
| Visual search Q&A | March 5, 2026 | AI Mode can fan out across the objects in one photo |
| AI features page | Updated December 10, 2025 | AI Overviews and AI Mode may both use fan-out |
| AI optimization guide | Updated July 10, 2026 | Fan-out queries are related searches the model runs for more results |
What does fan-out mean for a small business website?
Think about how people shop for a local service. They want the price, the timing, and whether you cover their area. Fan-out suggests Google's AI may look for those details too.
A page that only names the service leaves those questions open. A page that answers them clearly helps the reader decide. It may also match more of the related searches Google runs.
Google also sets a floor. A page must be indexed and eligible for a snippet in Search. There are no extra technical rules for AI Overviews or AI Mode.
Our AEO audit covers those basic checks in more detail. It aims to help customers reach a page that answers them.
Which follow-up questions do customers ask?
Most customer questions fall into a few groups. Your calls, emails, and quote requests are the best source. Check your pages against these groups:
- Price: what it costs and what changes the price
- Timing: how soon you can start and how long it takes
- Service area: the towns and neighborhoods you cover
- Options: repair or replace, or one material versus another
- Trust: licenses, warranties, and what happens if something goes wrong
- Next step: how to book and what to have ready
You don't need every answer on one page. Put each answer where a reader would expect it. Then link related pages so people and crawlers can find them.
How to map the follow-ups for one service page
For example, say a fence company has a page for wood fence installation. Here's a simple way to list the questions that page should answer.
- Write the main question the page answers, like who installs wood fences nearby.
- List the follow-ups from your calls, emails, and quote forms.
- Add the searches that already bring visitors, from your Search Console Performance report.
- Sort each question into a group: price, timing, area, options, trust, or next step.
- Mark which questions the page answers now and which need a short section.
- Link out to a full page when a question needs one, like a cost guide.
Keep the page written for people. Google's optimization guide warns against separate pages for every fan-out query. Doing that mainly to sway results breaks its scaled content abuse policy.
The same guide says you don't need to chase every keyword variation. Google's AI systems understand synonyms and general meaning. For most small businesses, one clear page is better than ten thin ones.
What don't you need to do for AI search?
Google's optimization guide lists several tactics you can skip for Google Search. That saves time and budget for a small team. Here's the short version:
- No llms.txt or other special AI text files
- No chopping content into tiny chunks
- No special schema markup just for AI features
- No rewriting your copy in a style made for AI
- No chasing inauthentic mentions across the web
Structured data still has a place. Google says it can help pages qualify for rich results. It just isn't required for generative AI features.
What changed in September: image searches in Search Console
On September 24, 2026, Google added multimodal search data to Search Console. It covers searches made with an image instead of typed words. That includes Lens, Circle to Search, image uploads, and Chrome's “Search this image.”
Look for the new multimodal search type filter in the performance reports. It appears in the Search results report and the Generative AI features report. Google says the data is rolling out globally.
This ties back to fan-out. Google says AI Mode can fan out across several objects in one photo. Data only shows up once image searches bring your site traffic.
If photos help you sell, check the filter each month. Google's AI features page also suggests high-quality images and videos. Original photos of your real work can help customers judge you.
How can you tell if AI search sends you visitors?
Google counts AI feature traffic inside the regular Web search data in Search Console. The Generative AI report adds a focused view of AI Overviews and AI Mode impressions.
Our guide to the Generative AI report explains what it can and can't show. Use it next to your own records of calls, forms, and booked jobs.
Be careful with tools that claim to see inside Google. Google says no third-party tool has access to its internal ranking or AI systems. Weigh any tool's advice against Google's own guidance.
Fan-out mapping is also part of our GEO services. They aim to help customers find you when they ask AI search for help.