An in-market audience is a segment Google builds of people whose recent behaviour suggests they are actively researching and comparing a particular product or service, such as cars, holiday lets or business accounting software. You can add these segments to your Google Ads campaigns to reach those people, or to watch how they perform.
How in-market audiences work
Google looks at signals from people who have ad personalisation turned on: recent searches, sites and apps visited, videos watched and how often, plus how those patterns compare with people who later went on to buy. When someone’s activity matches the pattern for a category, they join that segment for as long as the behaviour continues.
Segments are arranged in a hierarchy, from broad parents such as “Travel” down to specific children such as particular destinations or types of trip. They are one type of audience segment in Google Ads, alongside your own data, remarketing lists and interest-based groups such as affinity audiences, which describe long-term interests rather than current shopping.
How you add them matters, and the targeting setting decides it:
- Observation Ads still show to everyone your keywords or placements reach, and Google reports how the segment performs. In Search, this is usually the right starting point.
- Targeting Ads show only to people in the segment. This narrows reach and is more common in Display and video campaigns.
In Performance Max, in-market segments can be added as an audience signal, a starting hint for Google’s automation rather than a fixed limit.
Why it matters
Keywords tell you what someone typed once. In-market segments add context about what they have been doing for days or weeks. A UK conveyancing firm might find that searchers who are also in the “residential property for sale” segment convert far better than average, which is a good reason to put more money behind them. The same report can show the opposite: a segment that clicks a lot but rarely enquires, which tells you where to hold back.
On Display and YouTube, where there is no search query, in-market segments are one of the better ways to find people with genuine purchase interest rather than casual browsers.
They have limits. Membership depends on Google’s modelling, people who have turned off personalised ads are not included, and some categories, such as sensitive health topics, are not available for personalised targeting at all.
Common mistakes
- Switching a search campaign to targeting mode on day one, cutting off most of the searchers who would have converted.
- Picking the broad parent category when a specific child segment matches the offer far better.
- Adding a long list of overlapping segments, so the reports become hard to read.
- Assuming the segment describes only buyers. It includes researchers and people who already bought elsewhere.
How to act on it
Browse the in-market list in the audience manager and choose two to five segments that clearly match your offer. Add them to your search campaigns in observation mode. After a few weeks with enough clicks, compare each segment’s conversion rate and cost per conversion with the campaign average. If you bid manually, raise bids only where the difference is clear and consistent. Smart Bidding ignores audience bid adjustments in Search, so there the data is more useful for deciding which offers, ads and budgets to favour.
If none of Google’s segments fits, a custom segment built from the searches and websites your customers use may work better. Testing audiences this way is a routine part of how I run Google Ads management.