Amazon DSP Retargeting: The 2026 Remarketing Playbook

Amazon DSP retargeting is the part of DSP almost every brand runs and few brands measure honestly. It reports the best ROAS in the account, which is exactly why it needs the most scrutiny.

This guide covers how remarketing works in Display, Video and Audio (DVA) campaigns in late October 2026: the audience types, lookback windows, exclusions, frequency caps, creative, bids and budget share. It ends with a worked example and a holdout test you can run yourself.

What Is Amazon DSP Retargeting?

Amazon DSP retargeting is the use of Amazon's demand-side platform to reach people who have already interacted with your products or brand: they viewed a detail page, searched for something you sell, added to cart, bought, or visited your website. Amazon's own term for it is remarketing.

The ads run as display, online video, streaming TV or audio, on Amazon's own properties and across third-party sites and apps. Unlike Sponsored Display, DSP lets you combine audiences, exclude people, cap frequency and send traffic to your own site.

If DSP itself is new to you, start with our explainer on what Amazon DSP is and how it works. This post assumes you know the basics and want retargeting to pay.

What Changed in Amazon DSP Retargeting in 2025 and 2026

The platform, the campaign names, the creative and the attribution rules all moved in the last twelve months. If your remarketing playbook dates from 2024, these are the changes that touch it.

DVA+ quick setup lets Amazon's AI manage audiences, and Amazon's announcement says retargeting is available only in DVA+ advanced settings. If you want a remarketing ad group with your own windows and exclusions, you need advanced settings or the classic DVA flow, which non-US DSP users keep for now.

The January attribution change matters more for retargeting than for any other tactic, because so much remarketing credit comes from ad views. We cover it in the measurement section.

Amazon DSP Retargeting Audience Types

Every remarketing audience is defined by a behavior, a set of products and a lookback window. The behaviors fall into three families: what shoppers did on Amazon, what they did on your site, and what you can build yourself in Amazon Marketing Cloud (AMC).

1. Product Views Remarketing

Views remarketing reaches shoppers who looked at your detail pages and didn't buy. It's the first retargeting ad group we launch in every account, and the one most likely to look better than it is.

You choose the ASINs, or use dynamic segments Amazon calls "advertised products" and "related to advertised products", described in Amazon's remarketing and lookback guide.

2. Similar Product Views

Similar product views reaches people who viewed products like yours, usually competitors. It's conquesting with a retargeting price tag: higher intent than prospecting, lower conversion than your own viewers.

Only run it where you win on price, rating or reviews, or you pay to remind shoppers of a rival's product.

3. Product Search Remarketing

Search remarketing reaches shoppers who searched on Amazon for terms related to your products. You don't pick the keywords; Amazon decides which searches count.

Since November 2025 Performance+ can also reach shoppers who engaged with your Sponsored Products ads. That links the search budget you already spend to the display budget that follows it.

4. Add-to-Cart Audiences

Cart abandoners are the highest-intent audience you can build, and you build them in AMC rather than picking them from a list. Amazon's AMC audiences launch uses exactly this example: shoppers who added a product to cart but didn't buy.

Keep the window short. A cart from yesterday is a sale you can still recover; a cart from five weeks ago is usually a purchase made somewhere else.

5. Past Purchasers

Purchases remarketing reaches people who bought from you. Its jobs are replenishment, cross-sell and launches, never "remind them of the product they just bought".

Set the window around the repurchase cycle. A 45-day consumable gets a 30 to 60-day purchaser audience, and anyone who bought in the last 30 days is excluded so you don't pay to show a refill ad to someone with a full bottle.

6. Brand Halo

Brand halo audiences reach people who viewed or bought other products from your brand. We use them for cross-sell and for launches, where a new ASIN has no viewers of its own yet.

7. Website Visitors Through the Amazon Ad Tag

The Amazon Ad Tag on your website builds audiences of site visitors, which you can retarget on and off Amazon. For a brand that sells mainly on its own site, this is the core retargeting pool. Our guide on using Amazon DSP if you don't sell on Amazon covers the setup.

For UK and EEA visitors, Amazon requires a valid consent signal with the data you send. Brands driving off-Amazon traffic into Amazon can also use Amazon Attribution re-marketing, which reaches people you sent to Amazon in the last 30 days.

8. AMC Custom Audiences

AMC custom audiences are segments you define from your own event-level ad and shopping data: repeat viewers who never bought, streaming TV viewers who never visited a detail page, buyers of product A who never bought product B.

They're the most precise retargeting tool on the platform, and they double as exclusions. Our guide to AMC custom audiences has the builds we use most. Since October 2024 the same audiences also work in Sponsored Display and as bid boosts in Sponsored Products and Sponsored Brands.

Our Amazon DSP targeting guide covers prospecting audiences, contextual and delivery controls. This post stays on the bottom of the funnel.

How to Set Lookback Windows

A lookback window is the period in which the behavior must have happened. It's the single setting that most changes what a retargeting ad group costs and what it reports.

Amazon's remarketing guide notes that shoppers take 6 to 7 days on average to buy after they start shopping, and its examples use 7, 14 and 30-day windows.

In the DSP audience builder, views-based audiences go back up to 90 days and purchase audiences up to 365. Check the options in your own account, as Amazon doesn't publish one list for DSP.

These are the windows we start from:

1. Fast-moving products (under about $30, bought on impulse): views at 14 days.

2. Considered purchases (electronics, furniture, premium beauty): views at 30 days.

3. Cart abandoners: 7 to 14 days, whatever the product.

4. Past purchasers: start the window where the repurchase need starts, and end it before the shopper has clearly gone elsewhere.

Split the Pool With Sponsored Display

When Sponsored Display and DSP both retarget the same viewers, you bid against yourself. Our DSP vs Sponsored Display comparison recommends splitting by window, and that's what we do.

Sponsored Display takes viewers from the last 1 to 7 days, where click-priced remarketing is cheap and the intent is freshest. DSP takes viewers from 8 to 30 days, where reach, frequency control and exclusions matter more. In DSP, that means targeting 30-day viewers and excluding 7-day viewers.

Exclusions: Don't Pay for Shoppers You Already Have

Exclusions are what separate a retargeting program from a very expensive thank-you note. Every remarketing ad group needs at least one.

1. Recent purchasers of the advertised products. Use a window that matches the repurchase cycle. A shopper who bought on Tuesday shouldn't see your "still thinking about it?" ad on Wednesday.

2. The Sponsored Display window. Exclude 1 to 7-day viewers from DSP views remarketing if Sponsored Display already covers them.

3. Other retargeting ad groups. Exclude cart abandoners from the broader views ad group, so the higher-intent audience gets its own bid and creative.

4. Your CRM list, where it's relevant. Hashed customer lists keep existing DTC customers out of acquisition-style remarketing.

Since July 2026, audiences you add to Performance+ and Brand+ are signals, not limits, but exclusions remain strict. That makes the purchaser exclusion the one setting you should never leave to the AI. Our post on excluding audiences in Amazon DSP campaigns has more AMC-based exclusion builds.

Frequency Caps for Retargeting

A frequency cap limits how many times one person sees your ads in a period. Retargeting audiences are small, so without a cap the same shoppers soak up the budget until they're seeing you several times a day.

Amazon's frequency capping guide says there is no single cap that works for everyone, and that a blanket cap across all ads isn't recommended. We agree, and we set caps by audience:

DSP caps work at the ad group and campaign level, and frequency groups hold one cap across several campaigns. Use a frequency group when views, cart and halo remarketing run as separate campaigns on overlapping people.

Our frequency capping guide covers caps for the other funnel stages.

Creative: Responsive eCommerce and Its 2026 Update

Responsive eCommerce creative (REC) is Amazon's dynamic display format for products sold on Amazon. It builds the ad from your listing, with image, price, rating, deal badge and a call to action, and it's the default retargeting creative in most accounts we manage.

The basics, from Amazon's REC ad specs:

• Up to 20 ASINs per creative, rotated automatically.

• Out-of-stock ASINs are skipped, and bidding pauses if every product is out of stock.

• AI optimization can adjust images, headlines and layouts; Amazon reports a 14% average CTR lift for opted-in ads in its 2025 data.

• Video REC runs on third-party publisher sites in the US as of June 2026.

What the September 2026 Update Added

On September 30, 2026 Amazon reimagined responsive eCommerce creative. The additions that matter for retargeting:

• In-banner video, uploaded, pulled from existing campaigns or generated.

• Multi-image carousels of three to six products on third-party sites, which suit purchaser cross-sell.

• Alexa for Shopping prompts that let a shopper ask questions or add to cart from the ad (US only).

• Brand identity controls for logos, colors, imagery and copy guardrails (US only).

• Advanced Preview, filtering by ASIN, placement, size and language before launch.

The announcement adds a second number to the 14% CTR lift: 7.2% higher ROAS for ads using AI optimization, from Amazon's internal 2025 data.

Match the Message to the Window

The listing does the selling; your job is to choose which products and which message each audience sees.

1. Recent viewers: reviews, ratings and the one benefit that closes the gap.

2. Cart abandoners: the deal, the coupon or the delivery date, with a deadline if there is one.

3. Past purchasers: the next product, not the last one. A carousel of complementary ASINs works well here.

4. Website visitors: a branded creative that lands where they left, on your site or your Amazon store.

Bids, Budget and Budget Share

DSP is priced per thousand impressions (CPM), plus a technology fee that is a percentage of media. For retargeting, the budget question comes before the bid question, because the audience sets a hard ceiling on useful spend.

1. Find the Spend Ceiling First

The most a retargeting ad group can usefully spend is: targetable audience × reach rate × frequency cap × weeks × CPM ÷ 1,000.

With 37,000 targetable shoppers, 70% reach, a cap of four a week over four weeks and an $8 CPM, that's 414,400 impressions and about $3,315 a month. Budget above that doesn't buy more shoppers; it sits unspent or pushes you to raise the cap.

2. Bid for the Audience You Have

Retargeting audiences are small and every competitor wants them, so they clear at higher CPMs than prospecting. In the accounts we manage, we start retargeting bids 20% to 30% above the account's prospecting CPM and lower them if the ad group spends its daily budget early.

Set the ad group goal to match the job: ROAS or cost per purchase for views and cart remarketing, and since April 2026, consideration KPIs such as detail page view rate are an option in Performance+. Our guide to DSP bidding strategies covers the bid settings in detail.

3. Cap Retargeting's Share of the DSP Budget

Retargeting can only harvest what the rest of the funnel plants. A brand that puts 90% of DSP into remarketing sees great ROAS for a quarter, then a shrinking pool, rising CPMs and frequency of 15 or more.

We usually hold retargeting at 15% to 30% of DSP spend, as in the $20,000 split in our DSP ad types guide. Our full-funnel DSP strategy covers how to feed the pool from above.

A Worked Example: From Audience Size to Cost per Purchase

Here's one month of a views remarketing ad group, with illustrative numbers. Follow the order of the arithmetic, then watch what happens when you ask what the ads caused.

1. Audience. 60,000 viewers in 30 days, minus 18,000 who viewed in the last 7 days (left to Sponsored Display), minus 5,000 recent purchasers, leaves 37,000 targetable shoppers.

2. Reach. Not everyone is reachable on the supply you buy. At 70% reach, the ad group reaches 25,900 people.

3. Frequency. With a cap of four a week, delivery averages three a week, so 12 impressions per person over four weeks: 310,800 impressions.

4. Cost. At an $8 all-in CPM, that's $2,486.

5. Attributed result. 2.0% of reached shoppers buy: 518 purchases at $4.80 each. On a $35 order that's $18,130 in sales and a 7.3 ROAS.

6. Incremental result. A holdout group that saw no ads bought at 1.4%. Only 0.6 points of the 2.0%, or 30%, were caused by the ads: about 155 purchases, at $16.00 each, for an incremental ROAS of 2.2.

If the product earns $14 per order before ads, the attributed number says this ad group is a winner and the incremental one says it loses about $2 on every sale it causes.

That's the usual pattern, not a special case. The fix is rarely "turn it off": shorten the window, lower the cap, tighten exclusions, then test again.

How to Measure Incrementality in Retargeting

Incrementality is the share of sales that happened because of the ad, not just after it. Retargeting needs it more than any other tactic, because the people it reaches were already close to buying.

1. Run a Holdout in AMC

The cleanest test is a holdout. Split the remarketing audience at random in AMC into two custom audiences, for example 90% and 10%, target the larger one and exclude the smaller one.

After four weeks, compare purchase rates for the two groups in AMC over the same dates. The difference is the lift, and the lift divided by the exposed group's rate is the incremental share.

Keep the split random. Comparing with viewers who simply weren't reached flatters the ads, because those people differ from the ones who were.

2. Read Attribution With the 2026 Rules in Mind

Since January 1, 2026, DSP ads served in the Amazon store use Amazon's shopping-signal enhanced last-touch model for view credit, with a shorter window. The previous count survives as "all views" metrics.

Retargeting results from 2026 will look worse than 2025 without performing worse. Compare like with like, and say which method a number uses when you report it.

3. Watch New-to-Brand Share and Overlap

Retargeting should have a low new-to-brand share; that's its nature. The warning sign is a "prospecting" ad group with the same low share, which usually means its exclusions are missing.

AMC overlap queries show how many retargeted buyers also clicked a Sponsored Products ad before purchasing. A heavy overlap means two ad types are claiming the same sale.

4. Give Upper-Funnel Ads Credit for the Pool

Long-term sales estimates the 12-month value of the detail page views and add-to-carts an ad drives, which is the fair way to compare a streaming TV line with remarketing. Our Amazon DSP reports guide lists which reports to pull, now in unified reporting.

Mistakes We See in Amazon DSP Retargeting

• No purchaser exclusion. The ad group reports a great ROAS by showing ads to people who already bought.

• One audience, one window, one creative. Viewers, cart abandoners and past buyers need different windows, caps and messages.

• Sponsored Display and DSP on the same pool. Split by window, or the two bid against each other for the same shopper.

• 90-day views windows by default. Longer windows add reach and mostly add shoppers who already bought elsewhere.

• Budget above the spend ceiling. The extra money buys frequency, not customers.

• Retargeting quick setup in DVA+. Retargeting and suppression live in advanced settings; quick setup hands audiences to the AI.

• Judging on attributed ROAS alone. Without a holdout, you can't tell harvested sales from caused ones.

How We Run Amazon DSP Retargeting in Adbrew

Everything above works in Amazon Ads Agent directly. The hard part is keeping windows, exclusions, caps and holdouts consistent across many ad groups and brands.

Adbrew is an agentic retail media management platform for Amazon and Walmart, and DSP retargeting runs in it alongside Sponsored Ads and AMC:

• DSP with our team and no seat minimum. Run Amazon DSP through Adbrew's seat, or connect your existing DSP account, with our team helping plan the remarketing structure.

• [AMC audiences without SQL](https://adbrew.io/amc-amazon-marketing-cloud-tool/). Build cart abandoners, repeat viewers, lapsed buyers and holdout splits in a few clicks, then use them to target or exclude in DSP and for audience bid boosting in Sponsored Ads.

• Automation you can read. Rules you set on bid, budget, audience and frequency cap, with thresholds and lookback windows you choose.

• [Adbrew Intelligence](https://adbrew.io/adbrew-intelligence). Ask for "retargeting cost per purchase and new-to-brand share by audience, last 30 days" or "overlap between DSP remarketing buyers and Sponsored Products clickers", and an agent builds it from your data.

More than 5,000 brands, agencies and aggregators use Adbrew. Our Q4 playbook shows how these retargeting audiences fit into the Black Friday and Cyber Monday plan.

Retarget the Shoppers You Earned, Then Prove It

Amazon DSP retargeting works when each audience has its own window, exclusions, cap and creative, and when the budget respects what the audience can absorb. The holdout is what turns a flattering ROAS into a number you can defend.

Want to see AMC holdouts, DSP remarketing and Sponsored Display working from one audience plan on your account? Book a demo with our team and we'll map your retargeting windows with you.