Best Amazon DSP Agency: Six Situations, Six Answers

Why every ranked list disagrees with every other ranked list

Search this phrase and you get a dozen articles naming a dozen different winners. That is not because half of them are lying. It is because most of these lists are published by agencies that appear on them, and an agency's honest view of its own market naturally places itself high. The format works exactly as designed.

Which applies here too: reMKTR is an Amazon DSP agency and this page sits on our own domain. So we are not going to declare ourselves best. What follows instead is a set of situations, with the honest answer for each — including the three where the answer is not us at all. If a page in this category never tells you when to walk away from its author, that absence is the review.

The disambiguation, since it costs one sentence and saves people a wasted click: Amazon DSP means the demand-side platform, the programmatic buying product for display, video and audio inventory. Amazon Delivery Service Partner is the courier franchise programme with vans, routes and drivers, and it has nothing to do with advertising.

Six situations and the honest answer for each

1. You spend across many channels and need one measurement layer. Connected TV, paid search, social and retail media all in play, and the real question is how they trade off against each other. Hire a large full-mix agency with a genuine measurement practice — Tinuiti's published incrementality work, built on geo splits and audience holdouts inside its Bliss Point platform, is a fair example of what to look for. We measure Amazon display well; we do not model your whole mix.

2. Your next year is international marketplace expansion. Mexico, Brazil, Germany, Australia, Southeast Asia. Hire a marketplace agency with people on the ground in those markets. A US display specialist will do a worse job than a firm listing nine marketplaces and offices on five continents, and it would be dishonest to suggest otherwise.

3. Amazon is a serious share of revenue, search is tidy, and display is unproven. This is the specialist case. Hire a firm that will design a holdout before it spends anything, and make that test a contractual deliverable rather than a good intention.

4. You have a strong programmatic trader in-house already. Buy the seat, not the service. You will move faster and pay less, and a managed layer will feel like a translator between you and your own account.

5. You want scope certainty more than a relationship. Some teams simply do not want to run an agency selection every two years. A packaged product with a defined scope suits that preference better than a retainer does.

6. You clear a substantial minimum comfortably and want Amazon's own team. Amazon's managed service is described on its own product page as typically requiring a minimum investment of USD 50,000, varying by country, and as designed for advertisers who want DSP inventory with advisory service. If that fits, it is a legitimate choice and no agency should talk you out of it reflexively.

Three situations where no DSP agency is the right hire

We would rather say this now than four months into an engagement.

Your sponsored ads are leaking. Display amplifies whatever the account already does. In one account we can name — Walkize, cleared for public mention — $89,885 of ad spend went to search terms that produced zero orders across the period, 33.6% of everything spent, across 89,045 individual search terms that took money and returned nothing. Meanwhile the top 1% of search terms drove 75.5% of all sales. Adding display on top of that pattern buys more traffic to the same leak. Fix search first and display gets cheaper afterwards, because the retargeting pool is cleaner. If nobody is going to own that daily, Dr. PPC is the product that does it.

Your inventory cannot support the demand. Driving display traffic to items that go out of stock mid-flight wastes the media and damages rank at the same time. If fees and stockouts are what is actually eating margin, that is a supply problem and no media partner solves it — Dr. Stock is the sibling product built for that, and we would rather send you there first than sell you display into an empty shelf.

Your margins do not survive the fee. If the fee plus the media plus your cost of goods leaves nothing, the engagement fails regardless of how well it is run. Do that arithmetic before the first call, not after the third.

What "best" should actually mean here

Strip away the adjectives and a DSP agency is good or bad at four things. Score candidates on these rather than on how the pitch felt.

• Can they prove it worked? Not report it — prove it. A holdout, a matched control, a described method with a result attached. Anyone who has never withheld display from a matched group has never tested whether display works.
• Do they stop the double count? If display and sponsored ads are both credited with the same purchase, your blended return is inflated and the inflation grows with your budget. The reconciliation happens in Amazon Marketing Cloud or it does not happen.
• Is the fee legible? Rate, basis, cap, step-down, and what sits inside it. The undisclosed variable costs more than the headline number.
• Will the same people still be there in a year? Ask who runs the account weekly and how many other accounts they carry. Then ask to meet them before signing.

An agency that scores well on all four will serve you better than the one that ranked highest on someone's list, whoever wrote it.

Run a paid pilot instead of a selection process

The alternative nobody proposes, because it suits neither the agency's commercial model nor the buyer's procurement habit — and which frequently produces a better decision than a nine-week pitch process.

The structure. Pick two candidates from the situations above. Give each a defined three-month engagement with a real but bounded budget, a written scope, and the same success definition. Pay both properly; a discounted pilot buys discounted attention. At the end, one continues and one does not, and both knew that going in.

What to hold constant so the comparison means something: the same product set, the same media budget, the same reporting cadence, the same inclusions list, and the same measurement design — including a holdout, agreed with both parties before either spends anything. Different measurement methods make two pilots incomparable no matter how the numbers land.

What you actually learn that a pitch cannot tell you: how they behave in week six when something breaks, whether the person who presented is the person doing the work, how fast questions get answered, what arrives on an invoice that was not discussed, and whether they raise problems before you notice them.

What it costs. More than one selection process, less than eighteen months with the wrong partner. For brands where display is a genuinely material budget line, that trade is usually worth making once.

The catch, stated honestly: three months is short for display. Audience pools take time to build, and a pilot will underrepresent what a mature programme does. So judge the pilot on process, honesty and measurement discipline rather than on the return multiple — which, conveniently, are the things that actually predict the next two years.

What we are, stated with its limits

reMKTR is the Amazon DSP arm of Full Circle, a full-service Amazon management company with $500M+ in managed spend across 100+ brands. We hold 109 live Amazon DSP advertiser seats and we sell one thing.

Across 30 of those advertisers in July 2026 — a slice of the book, labelled as such — the portfolio delivered 6.04x return on ad spend, 78.4 million impressions at a $4.00 CPM, a blended $1.42 cost per click, and $5.49 cost per acquisition across 57,137 attributed purchases, with 20.1% new to brand.

The limits: that is one month, it is an average across categories that behave differently, and attributed purchases are attributed rather than proven — which is precisely why the method matters more than the multiple. Last-click attribution cannot prove incrementality and never could; holdouts and matched controls can. We would rather be hired for that position than for the number.

Where to go instead, honestly. Dr. DSP — situation five above, the same capability as a product with a defined scope. Dr. PPC — the first disqualifier above, when sponsored ads are the actual problem and display would only amplify it.