If you run a website or an online shop, you have almost certainly seen this happen: lots of people land on your pages, browse the products, maybe add something to the basket… and then disappear.
Remarketing exists for exactly this reason: to bring back people who have already shown interest, remind them of what they saw and guide them towards a decision.
It used to be a simple, almost crude system. In 2025 it has become far more sophisticated. We now talk about Smart Re-Engage, an approach that analyses users’ small behaviours (how long they stay on a page, what they look at, what they avoid, whether they come back several times) to build tailored, personalised messages.
In short: we no longer chase the user — we accompany them at exactly the right moment.
What exactly is remarketing (explained from scratch)
Remarketing is an advertising strategy that lets you show ads to people who have already visited your website or interacted with your brand.
Real-world examples:
- Someone views your product and then leaves the site → they see one of your ads over the following days.
- Someone adds an item to the basket but does not buy → they get a reminder or an incentive.
- Someone reads one of your articles → they see an ad inviting them to download a guide or get in touch.
It is like saying: “Hey, you were interested — want to take another look?”
Why remarketing works much better today than it used to
Modern remarketing performs better thanks to two game-changing elements.
1. User micro-signals
Google can now read micro-behaviours such as:
- visit duration
- scroll speed
- returns to the same page
- tiny interactions (such as hovering over a photo)
- visiting the “pricing” page without converting
Each of these signals reveals a different intent, and advertising systems use them to work out what to show and when.
2. Predictive audiences
These are “smart groups” of users that Google, using artificial intelligence models, considers close to taking an action.
It is not magic: it is advanced statistics. Google reasons like this:
- this behaviour → often leads to a sale
- similar users → are probably ready too
- show the best ad to both
Users are then split into:
- cold → curious but not engaged
- warm → genuinely interested
- hot → ready to convert
The most effective remarketing strategies in 2025
1. Sequence-based remarketing: the “episodic” campaign
Instead of showing the same ad to everyone, you run a real narrative sequence.
A realistic example:
- Day 1 → remind them of the product they viewed
- Day 3 → show the main benefits
- Day 5 → add a review
- Day 7 → offer a discount or an incentive
This is the logic of ad series: short stories that unfold step by step.
2. DCO — Dynamic Creative Optimisation
A system in which AI automatically generates and tests many versions of your ads:
- different images
- shorter or longer copy
- more direct or more emotional headlines
- different calls to action
It then picks the version that converts best on its own. Result: better performance without manual work.
3. Remarketing based on real intent
Knowing that a user visited your site is not enough. You need to understand what they were trying to do.
GA4 now groups users by level of intent, using machine learning models that analyse the most meaningful behaviours.
The remarketing KPIs that really matter in 2025
Many businesses look only at ROAS, but remarketing does not work on the last click: it works on the likelihood of returning.
These are the most important metrics:
1. Impression share among warm users
Measures how often your ads were shown to the most relevant users.
2. Assisted conversions
All the times remarketing contributed to a conversion, even when it was not the last click.
3. Time to return
Shows how quickly users come back after seeing an ad.
4. Revenue per returning user
How much revenue is generated by users who come back several times.
FAQ
1. Does remarketing still work without cookies?
Yes. Remarketing today no longer depends on cookies, but on behavioural signals and AI-based predictive models.
2. How much do I need to spend to get started?
You can start with as little as €10 a day if traffic is low. From €20–30 a day upwards, results become more consistent.
3. Is GA4 essential?
Yes, because it is the tool that collects user behaviour and feeds the smart audiences used by Google Ads.
4. Is it better to use Performance Max or “classic” remarketing?
Performance Max includes remarketing automatically, but a dedicated campaign lets you personalise messages and build more effective sequences.
🎯 Want to build a remarketing strategy that genuinely guides users towards a decision?
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