Definition
Retargeting (also remarketing) is the practice of showing paid ads to people who have previously interacted with a brand — visited the site, viewed a product, abandoned a cart, watched a video — using cookies or platform-side audience matching.
Retargeting is the highest-ROI segment of paid advertising for most businesses. The audience is warm — they've already shown intent — so conversion rates run 3–10× higher than cold prospecting traffic, often at lower CPC. The math typically pencils out by the first audience segmentation, not the tenth.
The tiers matter. "Visited the homepage" is a much weaker signal than "abandoned cart with $200 of items". Effective retargeting layers audience tiers (visitors, engagers, abandoners) and serves each tier the message that matches their intent stage. Same offer to everyone is the rookie mistake — burnout and wasted spend.
Origin
Modern retargeting started with Criteo's product-retargeting technology (2005) and Google's Remarketing for AdWords (2010). Privacy regulation (GDPR, iOS 14, third-party cookie deprecation) has reshaped the technology since 2018, pushing retargeting toward platform-native audiences and first-party data.
How it works
- Place pixels (Meta, Google, LinkedIn) or upload first-party audiences.
- Build audience segments by intent tier (homepage visitor, product viewer, cart abandoner, past customer).
- Build campaigns per tier with messaging that matches the tier's stage.
- Cap frequency to avoid burnout (4–8 impressions per week is typical).
- Set aggressive bids on highest-intent tiers; lower on broad ones.
- Monitor incremental lift — retargeting that converts users who would have converted anyway is wasted spend.
When to use it
Use when
- Always, once you have meaningful site traffic.
- Especially: cart abandonment, free-trial-but-not-paid, post-event follow-up.
- When CAC is high on cold acquisition — retargeting is usually cheaper per conversion.
Skip when
- On audiences that already converted (unless cross-sell or expansion is the goal).
- Without frequency caps — burnout drops conversion fast.
- When the audience is so small the ad system can't optimise.
Key metrics
- Retargeting CTR (typically 2–5× cold CTR).
- Retargeting conversion rate.
- Retargeting CPA vs. cold CPA.
- Incrementality — would these conversions have happened anyway?
Examples
- Retargeting traffic converts 3-5x higher than cold traffic, at a fraction of the CPC.
- Without retargeting, you're paying to acquire awareness and then letting it expire.
- Cart abandoners got the discount, blog readers got the case study.
In practice at Makreate
Makreate retargeting strategies layer audience tiers (visitors, engagers, abandoners) so each segment sees the message that matches their intent stage. A recent ecommerce client had no retargeting; we set up cart-abandoner, product-viewer, and 30-day-visitor tiers with tier-appropriate creative. Within two weeks, retargeting drove 24% of total revenue at 1/3 the CPA of cold. Six weeks in, that was 38% of revenue — the channel funded itself many times over.
Advertising →Common mistakes
- Showing the same ad to everyone, regardless of where they dropped off.
- No frequency cap. Burnout drops conversion fast.
- Retargeting people who already converted — unless cross-sell is intentional.
- Ignoring iOS 14 / cookie-deprecation impact. Audiences are smaller and noisier than they used to be.
- Not measuring incrementality. A lot of retargeting reaches users who'd convert anyway.
Frequently asked
How long should the retargeting window be?
Depends on consideration cycle. Ecommerce: 30 days. SaaS: 60–90 days. B2B with long sales cycles: 180+ days. Set windows to match how long buyers actually take.
Retargeting after iOS 14?
Smaller audiences, noisier optimisation. Server-side conversion APIs (CAPI for Meta) and first-party audience uploads partially recover the loss. Plan for less precision than 2019.
How aggressive can I be with frequency?
Cart abandoners can take 2–3× normal frequency; broad visitors should see 4–8 impressions per week, not 30.