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Amazon DSP Inventory Report Placement Sizes 24 September 2025

Published on September 24, 2025

About this video

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In this video, we explore a practical way to optimize your Amazon DSP campaigns using the placement-level data available in the Amazon DSP Inventory Report. If you've already started using supply source reports to optimize your spend, this video walks you through the next step—analyzing ad placement performance by size to reduce wasted budget and improve return on ad spend (ROAS).

The video shows a live account walkthrough where we identify a placement with a very low ROAS that is also one of the top spenders. Based on that data, we explain why this is a clear candidate for removal. You’ll also learn how to navigate to the creative section of your campaign and disable underperforming placement sizes to prevent your ads from showing in poor-performing slots.

We also show how this approach applies to multiple orders, and even if the total monthly spend is relatively low, these small optimizations can lead to meaningful long-term savings and better efficiency in your DSP strategy.

Topics covered in this video include:

* How to access the Amazon DSP inventory report * Switching report filters to view by placement size * Sorting data by total cost to find top spenders * Identifying placements with low ROAS * Navigating to creatives and disabling specific placements * Saving money by excluding inefficient inventory types

If you're running programmatic ads through Amazon DSP, this technique helps you spend smarter and focus your budget where it actually drives sales. These insights are actionable, quick to implement, and can be repeated across all your campaigns.

This method adds another layer to your Amazon DSP optimization strategy. In previous videos, we covered how to analyze supply sources and domain-level performance. This placement-based approach complements those strategies and gives you even more control over your ad spend.

Contents: 00:00 – Introduction 00:20 – How to access the Placement Report in Amazon DSP 01:20 – Analyzing placement-level data and ROAS 01:40 – Identifying and selecting poor-performing placements 03:00 – Navigating to the Creatives section in DSP 03:20 – How to exclude a specific placement size 04:10 – Summary of cost savings from placement exclusions 04:30 – Final thoughts and future content preview

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Transcript

Hi guys, welcome to another video on optimizations inside Amazon DSP. In my previous video, I mentioned how to use inventory report and supply sources to find the gaps in your optimizations where you can save a ton of money on a monthly and a year level. In this video, I'm going to talk about the same inventory report, but we're going to look at the placement uh report inside of it. So, follow along. It's pretty easy to to find it once inside your Amazon DSP. You will see your orders um listed here. Now for each and every order, once you go inside, you will see this one. So inventory report on the left. By default, you are you are landed on line items. Just go down below to inventory report. And this is absolutely the same report that we used in our last video. The thing here is that you can switch here between different options. So here as in previous video we use supply source but you can use also domain or apps deals and placement sizes. Now for this particular account we don't have any domains or apps or deals here. So we're going to focus on placement size inventory type. Once you do that you will be presented with a bunch of data. The date range is monthto date. And now let's sort by total cost. Once you do that, you will immediately spot some good ROS. So 9 713 two. It's not that good. You know, we may consider pausing that one, but take a look at this guy. So it's one of the top spenders in terms of cost. It has 0.4 ROS. So that's terrible. Um, so that's the placement that we want to turn off. And I will I will show you how to do that. It's it's only a few clicks away. Also, there are few other candidates that based on the placement size, we can determine roughly where they are coming from. So, do that for all of your orders. So, this is only a short date range and the spend total spend is close to 1,000. So, it's not a big deal, but still, you know, why waste €127? It's not bringing you enough sales. So, there's a additional one that's also a good example second order also let's do the same sort by the total cost and you will see that there are also some candidates that we can shut off completely I think it's not such a bad situation here but yes we can we I think it's actually the same one that we can uh delete from the previous one so to stop advertising on this placement size you need to go to your creatives so to go there you need to go back to your um line item and then uh go to the creative section and then if you have multiple creatives this is something that you need to do for each one of them. So once you scroll down to the placement section choose specific sizes and on the list find the one placement that you want to exclude. So for this occasion it's this 350x 420 and we want to find it and 350 420 then um turn it off and click save and that should be it. So just this is how we do it and we've seen uh savings by doing it this way. So yes it's pretty simple. It's another level of optimizations you can do on your DSP and I will be covering more in the following days. Follow me on LinkedIn for more of these tips and follow us on YouTube.

Frequently asked questions

What is the Amazon DSP Inventory Report and what does it show?

The DSP Inventory Report shows how your ad budget was distributed across different supply sources, meaning the specific ad exchanges, Amazon-owned properties, and publisher networks where your DSP ads were served. For each supply source, the report displays cost, impressions, click-through rate, total purchases, total product sales, and ROAS. You can access it either at the account level to see all active orders at once, or inside a specific order to see the breakdown for that campaign only. The report is the primary tool for identifying which inventory sources are generating profitable returns and which are consuming budget with little or no sales to show for it.

How do you use the Inventory Report to identify and exclude underperforming supply sources?

Sort the inventory report by total cost to surface the sources consuming the most budget, then compare each one's ROAS against your overall campaign target. Sources with high spend and low ROAS are the primary candidates for exclusion. Exporting the data to Excel and applying conditional formatting with a color scale from highest to lowest ROAS makes it immediately visual: poorly performing sources appear in red or yellow while strong performers appear in green. Select the sources you want to exclude, then navigate to the line item settings within DSP, open the inventory section, find the third-party exchanges list, and exclude each flagged source individually. Changes take effect quickly and the impact on ROAS is typically visible within days.

Should you only exclude supply sources with zero sales, or is it worth excluding moderate performers too?

Excluding only zero-sale sources leaves money on the table. The more important benchmark is whether a source's ROAS is below what you know you can achieve elsewhere in the same campaign. In the example from the video, a supply source with a 3.5 ROAS and 15 sales was excluded because the same budget allocated to the top-performing source was generating a ROAS of nearly 8. When the gap between a moderate performer and the best performer is significant, the opportunity cost of keeping the moderate source active is real. The budget freed by exclusion gets reallocated by the DSP system toward the remaining sources, which concentrates spend on the inventory where returns are highest.

Why does viewability rate matter when evaluating supply source performance in the Inventory Report?

The viewability rate column shows what percentage of impressions on each supply source met the viewability threshold you set in the line item settings. Because DSP charges per impression and a low viewability threshold can result in the system counting ad exposures where almost none of the creative was visible on screen, reviewing this column confirms that the impressions you are being billed for are genuine. In the example from the video, all supply sources showed 70% or above viewability because the line item had been configured with a minimum 70% viewability requirement. This means the performance data for each source reflects real ad exposure rather than impressions that were technically served but practically invisible, making the ROAS comparison between sources meaningfully accurate.