Audiences in advertising: cold, warm, hot, LAL and custom
I analyze the temperature of the audience in a human way: how cold differs from warm, what is look-alike and what segment to build it from, when custom audiences work, and when they burn the budget. With a table of offer temperature correspondence.

The words “cold” and “warm” audiences are thrown around in every discussion of advertising and almost always mean different things to different people. Most often they are confused with the degree of familiarity with the brand - and this is where the whole structure breaks down.
Temperature is about the stage of the task, not about getting to know you. A person can know your brand for ten years and be icy until they have a problem.
1. Three stages and what to show them
| Stage | Where is the man | What works | What doesn't work |
|---|---|---|---|
| Cold | Didn’t understand the problem or isn’t looking for a solution | Analysis of the problem and its costs, benefits, observation | Buy offer, price, comparison with competitors |
| Warm | I understand the problem and compare methods | Comparisons, cases, selection criteria | Explanation that the problem exists |
| hot | The method chosen, chooses the performer | Conditions, guarantees, withdrawal of the last objection | Long warm-up, useful “in general” |
The right column explains most of the dips. A cold audience is shown the price and is surprised at the zero conversion. They lead the hot item into a seven-day warm-up and lose it on the third letter, because the person was ready to buy on the first day.
2. Why do stages live in different campaigns?
The temptation to combine is clear: fewer campaigns, easier to manage, more data for the algorithm. But the algorithm optimizes for what converts better, and the hot part always converts better.
After a month, the entire budget goes to the hot audience, and impressions at the top of the funnel stop. After another month, the hot supply runs out - no one replenishes it anymore. This is the classic story of “at first everything was great, then it suddenly went downhill,” and the reason is the combination of stages.
3. Look-alike: the quality of the source is everything
LAL takes your segment and looks for people with similar behavior. The key here is: the algorithm looks for people similar to those you gave. He doesn't know how to differentiate between your best customer and a random customer who returned an item.
Hence the rule that is most often violated: the source is the narrowest quality segment, not the entire base.
| Source for LAL | What will happen |
|---|---|
| All site visitors | Similar to everyone, that is, to no one |
| All buyers | It’s already better, but the sign is blurred by one-time purchases |
| Purchased twice or more | Workable option for most |
| Top third by revenue | Narrowest and usually most accurate |
Bottom limit: too small a source produces noise. A reasonable guideline is from a thousand high-quality records; the algorithm below has nothing to learn from.
4. Custom audiences and their shelf life
Custom audience is a segment from your own data: loaded contact database, site visitors, those who interacted with advertising. Its advantage over interest targeting is that you know exactly who these people are.
The disadvantage is that it deteriorates. Contacts change, interests fade, part of the audience has already bought and its shows are now meaningless. A database that was loaded a year ago and has never been updated is gradually becoming an expensive way to show ads to the wrong people.
The practice is simple: update once a quarter and subtract those who have already become clients. The second is rarely done, but in vain - this is pure budget savings.
5. ICP and portrait: not synonymous
The audience portrait answers the question “who buys from us.” ICP - ideal customer profile - answers another: “who should be focused on.”
The difference is practical. The portrait is usually broad and therefore does not help make decisions: half the market fits it. ICP is narrow, describes those who bring the most money and the least problems, and it is he who determines where the budget goes and from whom to build a look-alike.
Definition and boundaries of the term - in ICP card, and the segmentation of an existing database by behavior is in the analysis RFM segmentation.
6. How to check that the stage is determined correctly
A simple test: Look at the ad and ask what the person must already know for it to make sense.
If understanding requires knowing that he has a problem, this is not a cold audience. If you need to know how your method differs from the neighboring one, it is no longer warm, but hot. Mismatch here is worth more than any creativity.
7. Summary
Temperature is a task stage, not an introduction to the brand. Each stage lives in its own campaign with its own goal, otherwise the algorithm eats up the top of the funnel. Look-alike is built from the narrowest quality segment. Custom audiences are updated once a quarter and are cleared of those who have already purchased.
Related materials: RFM segmentation, retargeting, ICP, how to build a funnel, audience segment hypotheses.