Attain announced on November 4 that its purchase-based audiences are available natively inside Amazon Ads DVA+. Brands can build campaigns using shopping signals from outside Amazon's own transactions.

That could reach relevant buyers who purchase elsewhere. It could also create another expensive audience taking credit for sales you would have made anyway.

What the Integration Adds

Attain's announcement says advertisers can segment by retailer, combinations of retailers, purchase category, and online versus in-store shopping. Attain says signals refresh daily and come from permissioned consumer spending.

EMARKETER's reporting describes activation across Amazon's advertising network, including Prime Video and third-party inventory.

This concerns DVA+, not a new targeting switch inside every Sponsored Products campaign.

It also expands a relationship that previously covered offline sales-lift measurement. Measuring outcomes and choosing whom to reach before an ad serves are different capabilities.

Audience targeting through Amazon's demand-side platform covers the buying model, though its access rules and budget examples predate current DVA+ terms.

Start With a Specific Question

“Reach people who shop at a competitor” is too broad to test. Someone can buy unrelated products from that retailer and have no interest in your category.

A sharper hypothesis might ask whether recent category buyers at selected retailers respond to a particular product benefit. Another might examine whether customers shopping across several retailers cost less to acquire than buyers loyal to one store.

Those are proposed tests rather than confirmed capabilities at every level of granularity. Before building one, ask which audience definitions, lookback windows, exclusions, and campaign settings your account can actually use.

Access to an audience is not access to identifiable customer records. Attain's permission claim describes its collection model, not a right for your business to obtain or reuse consumers' financial information.

Measure Additional Profit, Not Attributed Sales

Use a holdout or another credible comparison wherever the tools allow. Keep creative, offer, and measurement periods comparable so a discount change does not get mistaken for better targeting.

Take a campaign spending $5,000 and reporting $25,000 in attributed revenue, a 5:1 ratio. If only $10,000 is incremental and contribution before advertising is 30%, the campaign produced $3,000 of additional contribution against $5,000 in spend.

That loses $2,000 before any excluded costs. The distinction matters most when an audience already carries strong purchase intent, which is exactly what purchase-based targeting selects for.

Include media, data, agency, creative, discounts, returns, and fulfillment in the test budget. Ask whether quoted costs cover every required charge.

For brands sold through several retailers, consider where the sale lands. An ad can lift total brand demand while producing a different result for your Amazon account. Decide in advance whether the objective is Amazon contribution, total brand contribution, or something else you can measure.

Set Limits Before Launch

Pick one category, one hypothesis, and a budget you can afford to learn from. Do not move an acquisition budget into a new integration because the audience sounds more relevant.

Record the audience definition, campaign setup, cost components, attribution windows, and success threshold before launch. Set a stop condition for weak contribution or excessive frequency, and allow enough time to observe returns and delayed purchases.

The public announcement includes no seller-facing price list, universal minimum spend, or eligibility matrix. Confirm those with the provider or your advertising partner rather than borrowing requirements from an older DSP guide.

Ask for a written proposal showing the usable audience, total cost, and measurement design. If it cannot explain how you will separate new profitable demand from sales that were already likely, the integration is not ready for a meaningful budget.