Plain answer
Retargeting means showing ads to people who already interacted with your business — visited the site, viewed a product, abandoned a cart — but didn't convert. Because these people know you, retargeting typically converts better and costs less per result than advertising to strangers.
How retargeting actually works
A tracking tag — the Meta pixel, Google's tag — records who visited and what they did. Those visitors flow into audiences ("viewed a product in the last 14 days," "started checkout, didn't finish"), and your ads follow them across the platform's inventory. The more specific the audience, the more specific the ad can be: cart abandoners see the product they left; blog readers see a gentler introduction.
Retargeting vs remarketing: is there a difference?
In practice, no — the industry uses them interchangeably now. Historically "remarketing" leaned toward reaching existing contacts by email while "retargeting" meant ad-based follow-up of site visitors. Google's product even calls it remarketing1. Use either word; the mechanics in this entry are what people mean by both.
Why does retargeting perform so well?
Because the hardest work — awareness, interest — already happened, and someone else's budget (or your organic effort) paid for it. You're advertising at the bottom of the funnel, where intent already exists. That's also its honest limitation: retargeting harvests demand, it doesn't create it. An account that only retargets is living off a shrinking pantry.
Field note from TomasOne of the most profitable retargeting plays I've run wasn't chasing cart abandoners — it was cross-selling: bundling related products and retargeting the customers who already overlapped. Your warmest audience is the people who already bought one thing. Showing them the adjacent offer costs less than any cold campaign you'll ever run.
Can you overdo it?
Easily — everyone has been stalked across the internet by a pair of shoes. Three guardrails:
- Cap frequency so one person isn't hit dozens of times.
- Exclude people who already converted.
- Expire audiences sensibly — the visitor from ninety days ago has moved on.
Respectful retargeting reminds; relentless retargeting brands you as the shoes.
What this means for your ads
Retargeting is usually the first paid campaign worth running once your site gets real traffic — smallest budget, warmest audience, fastest proof. Set it up, cap it, exclude converters, and then put the serious budget into filling the top of the funnel it feeds on.
Research sources
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