What are Google AI Overviews and how do they work?
AI Overviews are summaries written by Google's Gemini models. They appear at the top of the results for some searches. Google reads several web pages, combines what they say into one answer, and links the sources beside or below it. It finds those pages in its normal search index, so the sources are pages that already rank. The choice of which ones to quote is different, though. Google favours pages that answer the exact question, give facts it can check, and come from sites it already trusts. The answer can be a paragraph, a list or a table, depending on the question.
How is AI Mode different from AI Overviews?
Both run on Google's generative AI, and both draw on the same search index. They work in different ways. An AI Overview is a summary at the top of a normal results page. It shows for some searches only, with the usual links underneath. AI Mode is a separate tab built for conversation. The searcher asks a full question, follows up, and gets an answer built from many searches Google runs behind the scenes, a step Google calls query fan-out.
The groundwork is the same for both: be indexed, answer questions plainly, and cover the follow-up questions a buyer asks next. AI Mode rewards that coverage more, because one question becomes several searches and each one can name a different source. Our guide to AI Mode optimisation goes deeper.
What triggers an AI Overview to appear?
Not every search gets one. Google decides case by case, based on the type of question, how complex it is, and what content exists to answer it. Questions that need a combined answer trigger them most often. Comparisons, research before a purchase and how-to questions trigger them often too. Google does not publish how often each kind triggers an overview, and it changes as the feature evolves, so treat any percentage you read with suspicion. The useful question for your business is narrower and easy to check: which of your customers' questions show an AI Overview today, and who does it cite?
- Questions: definitions, explanations, how something works.
- Research before buying: comparisons, reviews, shortlists.
- How-to searches: steps, processes, guides.
- Local searches: some now show an AI Overview as well as the map results.
- Rarely: searches for a specific website, sensitive topics, breaking news.
What makes Google include your content?
Ranking well gets you considered. It does not get you chosen. AI Overviews draw on pages that already do well in normal search, then pick the ones that fit best. Relevance matters most: the page has to answer the question that was asked, not just cover the topic. Structure matters too. Clear headings, short answer paragraphs and tidy lists are easy to quote. Google says no special markup is needed to appear in AI Overviews, but structured data that matches the page helps it understand what the page is about. Author credentials, sources and up-to-date content round it out. This is answer engine optimisation at its most practical.
- Rank well in normal search for the question you want to answer.
- Answer the question directly in the first few sentences.
- Use clear H2 headings that match the way people ask.
- Include facts Google can check: numbers, dates, names and sources.
- Add structured data that matches what the page shows, and nothing it does not.
- Show who wrote the page and why they know the subject.
- Keep time-sensitive pages up to date.
What practical steps increase your inclusion rate?
Start with the pages that bring in buyers. Find the searches in your category that already show an AI Overview and check whether you are cited. If you are not, study the pages that are, and change yours to match what works. The changes that help most are usually about structure, not new content: answer the question earlier, use clearer headings, put key facts in lists or short paragraphs, and keep structured data accurate. Then keep checking, because Google changes which sources it picks. This is repeatable work, not luck. For franchise questions such as which franchise in its category to buy in Australia, Google's AI Overview names our client, an Australian franchise brand, first and cites its franchise pages.
- Find the searches in your category that already show an AI Overview.
- Note which sources Google cites for each one.
- Rework your page to answer the question directly and early.
- Add clear H2 headings that mirror the questions people ask.
- Put key answers in short paragraphs or lists.
- Keep structured data accurate and matched to the page.
- Check again regularly and adjust to what changed.
What happens to your traffic when AI Overviews appear?
It is a fair worry, and the honest answer is that it cuts both ways. For some searches the overview answers the question, and fewer people click any result. For others, being a cited source puts your name above every normal result and earns clicks you would never get from position five.
You cannot stop overviews appearing, so the sensible response is to make sure that when one appears for a search in your category, your business is one of the sources. Being inside the overview beats being below it. The same groundwork helps in Google Gemini and the other engines covered in our GEO explainer. If you want it handled for you, our AEO services track your rankings and which AI answers name you, ship the fixes, and show you the receipts.