Best Amazon DSP Agency for a First-Time DSP Programme

The first flight is decided before it launches

Most disappointing first DSP programmes were not badly bought. They were badly framed. The campaign ran, some sales were attributed to it, and six months later nobody could say whether those sales would have happened anyway — so the budget got cut on a feeling rather than on evidence.

That outcome is entirely avoidable, and avoiding it costs three weeks of unglamorous work before launch. A partner who wants to be live by Friday is optimising for your enthusiasm rather than for your answer. The right response to "how quickly can we start" is "how quickly can we be certain", and a good agency will say so unprompted.

One disambiguation for anyone arriving cold: Amazon DSP is the demand-side platform, the product for buying programmatic display, video and audio inventory on and off Amazon. Amazon Delivery Service Partner is the courier franchise programme involving vans, routes and drivers. This page is entirely about the advertising one.

Three things to do before the first impression

1. Baseline everything you will later claim credit for. Eight to twelve weeks of history on total Amazon revenue, sponsored ads spend and sales by campaign type, organic session share, new-to-brand share, average selling price and inventory position by ASIN. Without this, every post-launch number is uninterpretable — you will be comparing a display month against a memory.

2. Design the holdout on day zero. Decide before launch which geographies or audience segments will see no display, how the control is matched, how long the test runs, and what result would cause you to stop. Agree the analysis method in advance so it cannot be reinterpreted after the fact. This is the single practice that separates a first programme that produces knowledge from one that produces a slide. It is also standard practice at the serious end of the market: published incrementality work in this category is built on exactly this — geo splits and audience holdouts.

3. Audit the creative inventory honestly. Display needs assets in a range of sizes plus video, refreshed before fatigue sets in. Count what you actually have, in the actual dimensions, before anyone quotes you a timeline. Ask whether production is inside the fee or billed on top, because for a first-time advertiser this is frequently the largest unexpected line.

What a sensible first flight is shaped like

Sequence matters more than budget size, and a good partner will resist starting at the top of the funnel.

• Weeks 1–4: remarketing. Shoppers who viewed your detail pages and did not buy, plus recent purchasers for consumables. The cheapest signal available and the fastest to read. It will also flatter your return, which is why nobody should judge the programme on this phase.
• Weeks 5–8: in-market and category audiences. Shoppers browsing your category who have not seen you. This is where the return multiple falls and the new-to-brand share rises. Expect that, and make sure your partner has told you to expect it before it happens.
• Weeks 9–12: considered prospecting and video. Broader reach, longer payback, hardest to attribute. Only run this if the holdout is live, because otherwise you will not be able to defend it internally.

Throughout, the holdout group sees none of it. That group is the whole point, and protecting it from well-meaning colleagues who want to "just add them in" is a real operational task.

The five first-timer mistakes that cost the most

• Judging week two. Attribution windows and audience build-out mean early numbers are noise. Agree in advance when the first real read happens, and hold the line.
• Running display over a leaking search account. Display feeds on the audiences your account generates. If a large share of sponsored spend is going to search terms that never convert, display inherits that pollution — the retargeting pool fills with people who were never going to buy.
• Launching without stock cover. Going out of stock mid-flight wastes the media and damages rank at the same time. Check cover for the flight length plus the reorder lead time.
• Letting both channels claim the same order. If display and sponsored ads are each credited with a purchase, your blended return is inflated. Reconciliation in Amazon Marketing Cloud is how that gets settled.
• Skipping the holdout because it feels like wasted reach. A holdout costs a small slice of potential sales and buys the only evidence that will keep the budget alive next year. It is the cheapest insurance in the programme.

What it takes to start, and what to ask about minimums

Amazon's own product page describes two arrangements. The managed-service option is designed for advertisers who want access to Amazon DSP inventory with advisory service, and typically requires a minimum investment of USD 50,000, with the note that this varies by country. The self-service option leaves the advertiser in full control of campaigns. Access arrangements have been widening, so confirm the current position directly with Amazon rather than with an article written two years ago.

Agencies holding their own seats set their own minimums, generally lower and more negotiable. When you ask, ask three separate questions, because they get blurred together in most answers:

• What is the minimum monthly media spend you will accept?
• Is there a minimum fee underneath that, and at what spend does the percentage take over?
• What is the minimum commitment length, and what is the notice period?

For a first programme, a shorter commitment with a defined test at the end of it is worth paying slightly more for. You are buying an answer, and an answer takes about a quarter to arrive.

The 30/60/90 scorecard

Agree this with your partner before launch and it will do more for the relationship than any reporting template.

• Day 30 — delivery and hygiene. Is the budget pacing? Are audiences building at the expected rate? Is the exclusion list behaving? Are creatives serving in every size? No performance judgements at all.
• Day 60 — efficiency and mix. Cost per click and cost per acquisition trending in a defensible direction. New-to-brand share rising as the mix shifts away from remarketing. Any placements or segments already worth cutting.
• Day 90 — the actual question. The holdout read. What happened in the group that saw no display, compared with the matched group that did. Plus the reconciliation: how many of the purchases attributed to display were also being claimed by sponsored ads.

A partner who agrees to be measured on day 90 by a test they designed on day zero is a partner behaving honestly. That agreement, more than any credential, is what a first-time advertiser should be shopping for.

What to tell your finance team before you start

First display programmes are more often killed by an internal conversation than by poor media buying. The way to survive that conversation is to have had it in advance.

Say what the money is buying. Not sales — an answer. The first quarter of a display programme is an experiment with a commercial by-product, and framing it that way protects it when the month-two numbers look ordinary. A budget presented as growth spend gets judged on growth in week three; a budget presented as a test gets judged on whether the test was well run.

Pre-agree the review date and the decision rule. Name the day the holdout is read, and state now what result would mean continue, what would mean adjust, and what would mean stop. Writing the stop condition down is the part that makes everything else credible, and it is the part most likely to be skipped.

Warn them the efficiency curve gets worse before it gets better. Remarketing flatters the early weeks; as the mix shifts toward audiences who have never heard of you, the return multiple falls and the new-to-brand share rises. That is the programme working as designed. If nobody has been told, it reads as decline.

Separate the fee from the media in the budget line. Finance teams reasonably want to know what was paid for management and what was paid for impressions. Agencies charging a percentage of media should be able to show both, and asking for it early prevents an awkward reconciliation later.

One sentence worth putting in the initial approval note: attribution will tell us which sales touched an ad, and only the holdout will tell us which sales would not have happened otherwise. Having written that down in month zero is what makes the month-three conversation straightforward.

Where reMKTR fits for a first programme

reMKTR is the Amazon DSP arm of Full Circle, a full-service Amazon management company with $500M+ in managed spend across 100+ brands, and we run 109 live Amazon DSP advertiser seats. A lot of those started as somebody's first flight.

What the book looks like once programmes are established — across 30 advertisers in July 2026, scope stated because it matters: 6.04x return on ad spend, 78.4 million impressions at a $4.00 CPM, a blended $1.42 cost per click, $5.49 cost per acquisition across 57,137 attributed purchases, and 20.1% new to brand. A first flight should not be benchmarked against that in month one; mature programmes have audience pools that a new one has not built yet.

What we will commit to for a first-time advertiser is the sequence above and the day-90 test. Last-click attribution cannot prove incrementality and never could; holdouts and matched controls can, and we reconcile in Amazon Marketing Cloud so display and sponsored ads stop double-counting each other.

Two siblings, and when they are the better first move. Dr. PPC — if sponsored ads are still leaking, this is the first hire, not display. Dr. DSP — if you would rather run a first programme as a defined product with a fixed scope than negotiate an agency relationship before you know whether display works for you.