What is a retail media audit?

A retail media audit is a structured review of a brand's advertising accounts across retailer networks, examining campaign architecture, wasted spend, self-competition, attribution accuracy and retail readiness. It produces a prioritised list of specific findings, each tied to a product, campaign and dollar amount, with a sequenced action plan.

Scope: One or many platformsDepth: Product and campaign levelOutput: Findings + action planTypical duration: 2–4 weeks

Find the money you're leaving on the table.

A retail media audit is a systematic review of your advertising accounts — across platforms, campaigns, keywords, bids, and ASIN-level performance — designed to identify structural inefficiencies, misallocated budget, and untapped growth opportunities.

Most brands with established retail media programmes have significant waste embedded in their accounts: campaigns funding competitor-brand searches, ad spend on ASINs without the Buy Box, bloated keyword lists with minimal return, and attribution models that make underperforming campaigns look profitable.

A thorough audit surfaces these issues with data — not opinions — and delivers a prioritised action plan with the expected impact of each recommendation quantified at product and campaign level. How much performance improves from structural changes alone varies substantially by account, and any consultant quoting you a percentage before looking at your data is guessing. What can be said is that recoverable structural waste is present in the substantial majority of accounts reviewed.

01

Campaign Architecture Review

Are campaigns properly segmented by brand vs non-brand? Match type? ASIN? A poorly structured account makes optimization impossible and inflates costs.

02

Keyword Efficiency Analysis

Which search terms are driving sales vs. consuming budget? We mine search term reports across all campaigns to identify wasted spend and harvesting opportunities.

03

Buy Box Health Check

Ad spend on ASINs without the Buy Box is pure waste. We audit every funded ASIN for Buy Box ownership and flag suppression risks before they drain budget.

04

Attribution & Measurement Audit

Are you measuring the right things? We review attribution windows, halo attribution, and cross-campaign cannibalisation — ensuring performance data reflects business reality.

What we examine

A complete audit covers six critical areas.

SPEND EFFICIENCY

Budget Allocation Analysis

Where is budget going vs. where revenue is coming from? We build ASIN-level revenue attribution tables that reveal which campaigns and products are actually driving sales — and which are inflating spend metrics without business impact.

ACoS by ASINTACoSHalo Attribution
COMPETITIVE EXPOSURE

Brand Leakage Audit

Branded keywords capturing non-brand budget, off-catalogue Sponsored Brand halo attribution, and competitor ASINs appearing in your Product Targeting campaigns all represent leakage. We quantify the financial impact and provide an immediate fix plan.

Brand vs Non-BrandHalo LeakageASIN Targeting
NEGATIVE KEYWORD GAPS

Negative Keyword Analysis

Negative keyword coverage is the most consistently under-built area in the accounts we review, and one of the few levers that recovers spend without requiring any budget increase. Every irrelevant query that converts to a click is wasted CPC. We build negative keyword lists from search term data across all match types — and audit the existing negatives too, because an over-broad negative phrase silently blocking an entire keyword cluster is just as costly as a missing one.

Negative PhrasesNegative ExactsAccount-Level Negatives
PORTFOLIO HEALTH

ASIN Prioritisation Review

Are you funding the right products? We map ad investment against organic rank, conversion rate, Buy Box ownership, and margin — then recommend a reallocation that concentrates spend on ASINs with the highest probability of incremental return.

CVR by ASINBuy BoxOrganic RankMargin
PLATFORM COVERAGE

Cross-Network Gap Analysis

Are you missing high-intent search volume on Instacart, Kroger, or Walmart because your budget is overly concentrated on Amazon? We benchmark platform presence against category distribution and recommend network expansion priorities.

Share of VoicePlatform MixCategory Coverage
REPORTING INFRASTRUCTURE

Measurement Stack Review

Is your reporting setup producing the data you need to make decisions? We audit your measurement stack — attribution windows, reporting cadence, KPI definitions, and dashboard reliability — and recommend infrastructure improvements.

Attribution WindowsDashboard QualityData Integrity
6areas examined: structure, spend efficiency, targeting, attribution, retail readiness and measurement
ASINlevel granularity — every finding tied to a specific product, campaign and dollar amount
90-dayprioritised action plan delivered with every audit, sequenced by impact and effort
11+platforms audited including Amazon, Walmart, Instacart, Kroger, Target and Google

Every finding is backed by data, not opinion.

📊

Raw data, not dashboard screenshots

We work directly from platform exports, search term reports, and API data — not dashboard summaries. This means we find issues that aggregated views hide.

💰

Dollar-impact quantification

Every finding is expressed in dollar terms: "This campaign is wasting $X/week on branded queries that are converting at 8x ACoS target." No abstract recommendations.

🚀

Prioritised, executable output

The audit deliverable is a prioritised action plan organised by impact and effort — so your team can begin implementing improvements from day one, not after weeks of planning.

The vocabulary

What problems does an audit typically find?

Campaign sprawl
Hundreds or thousands of campaigns with a small fraction enabled, accumulated over years. Sprawl makes accounts unreadable, and unreadable accounts do not get optimised — they get maintained.
Self-competition
The same product targeted by multiple campaigns on overlapping terms, bidding your own CPCs up. Common, expensive, and fixed with structure rather than bids.
Wasted spend
Budget going to search terms that will never convert — off-category, wrong intent, wrong product. Usually the fastest recoverable saving in any account.
Brand leakage
Branded search absorbed by non-brand campaigns, inflating their apparent performance and hiding what acquisition actually costs. Frequently a large share of non-brand revenue.
Attribution distortion
Misfiled campaigns or portfolios booking revenue to the wrong product line, producing reported returns that are confidently wrong. Invisible unless someone checks the structure.
Off-catalogue attribution
Attributed revenue landing on products the brand does not own or control, often driven by reseller listings and buy box conditions. It inflates reported performance without producing owned revenue.
Buy box suppression
Products where the brand does not hold the default purchase button. Ads generally will not serve, so media budget allocated to those products is largely undeliverable.
Negative keyword gaps
Missing negatives that let waste continue, or over-broad negatives that silently block entire keyword clusters. Both are found by auditing the negative list itself, not just the search terms.
Objective confusion
Acquisition, defence and harvesting judged on the same efficiency metric, which systematically defunds acquisition without anyone deciding to.
Measurement gaps
No incrementality position, no halo separation, no consistent definitions across networks. The reason accounts can look healthy while the business does not grow.

Comparisons

How does this compare to the alternatives?

Audit vs ongoing management

Two different engagements that get conflated when brands are deciding what they need.

AuditOngoing management
Question answeredWhat is wrong and what is it costing?How do we run this well week to week?
DurationTwo to four weeksContinuous
OutputPrioritised findings and an action planLive optimisation and reporting
Best whenPerformance is unexplained, or before an investment or agency decisionStructure is sound and needs consistent execution
IndependenceCan be run independently of whoever manages the accountHeld by whoever manages the account
When to use whichAn audit is diagnostic and finite; management is operational and continuous. Auditing an account you also manage has an obvious conflict — which is precisely why brands often commission an audit from someone with no stake in the answer.

Platform-provided review vs independent audit

Retailers and networks offer account reviews. They are useful and they are not neutral.

Platform reviewIndependent audit
CostUsually freePaid
Typical recommendationAdopt more formats, increase budget, enable more automationWhatever the data supports, including spending less
Cross-platform viewSingle network onlyAll networks together
IncentiveNetwork revenue growthFee is not tied to your spend
When to use whichPlatform reviews are genuinely informative about platform capabilities, and free. They will very rarely conclude that you should spend less on that platform or move budget to a competitor. Use them for what they are good at, and do not mistake them for independent analysis.

Real results

What does this work look like in practice?

Industry · Multiple Enterprise Brands

Finding growth opportunities hidden in mature accounts

Challenge

Mature accounts with substantial spend and years of accumulated structure, where reported efficiency looked acceptable but growth had stalled and nobody could explain why.

Our approach

  • Reviewed campaign structure and targeting overlap
  • Quantified wasted and cannibalising spend
  • Traced attribution and reporting inconsistencies
  • Assessed acquisition versus brand defence balance
  • Delivered prioritised strategic roadmaps

Recurring findings across audits

  • Campaign cannibalisation
  • Excessive branded spend
  • Weak acquisition strategies
  • Missing negative keywords
  • Budget allocation inefficiencies
  • Attribution blind spots
  • Reporting inconsistencies

Business impact

Rather than focusing on tactical bid adjustments, audits delivered prioritised strategic roadmaps aligned with commercial objectives.

Case studies are presented by industry rather than by client name. Figures are drawn from live account analysis. Engagements marked prior agency engagement were delivered by Ana Perez Ibarz in a previous agency role; the work and results are hers, the client relationships were the agency's. TNOMADS does not identify clients or publish client performance data without written consent.

Frequently asked questions

Common questions, answered directly.

A structured review of your advertising accounts across retailer networks, examining campaign architecture, wasted spend, self-competition, attribution accuracy, retail readiness and measurement. It produces prioritised findings tied to specific products and dollar amounts.
Six areas: campaign structure and architecture; spend efficiency and waste; targeting and keyword coverage; attribution accuracy and reporting integrity; retail readiness including buy box, stock and content; and measurement framework.
Typically two to four weeks depending on the number of platforms, the size of the catalogue and how quickly account access is granted. Multi-brand, multi-market portfolios take longer, mostly because of data access rather than analysis.
Read access to the advertising accounts, historic performance data covering at least the preceding six to twelve months, product and margin information where you are willing to share it, and context on your commercial objectives.
Scoped per engagement based on platform count, catalogue size and depth. It is quoted as a fixed project fee rather than as a percentage of spend, so the fee is not affected by what the audit recommends.
Common findings include campaign sprawl with most campaigns dormant, self-competition between campaigns, missing or over-broad negatives, brand leakage into non-brand campaigns, misfiled campaigns distorting product-line reporting, and media budget allocated to products that cannot convert.
It varies widely, and any consultant quoting a single reliable percentage before looking at your account is guessing. What can be said is that structural waste is present in the substantial majority of accounts reviewed, and that it is usually recoverable without spending more.
Sometimes, sometimes not. Several audits have concluded that the immediate priority was fixing retail conditions or structure before adding any budget at all. A fee that is not tied to your spend is what makes that conclusion possible to reach.
Yes, and it is common. It requires read access, which the incumbent agency can grant, and it is worth being clear with them about scope and intent up front. The audit examines the account, not the agency.
Often, yes — particularly if ROAS looks fine while total sales are flat. Healthy reported returns alongside stalled business growth is a classic signature of an account efficiently harvesting demand it already had.
Platform reviews are free, useful for understanding platform capabilities, and structurally unlikely to recommend spending less on that platform or moving budget elsewhere. An independent audit has no such constraint and can look across networks.
When you do not hold the default purchase button, your ads generally will not serve. Budget allocated to those products is largely undeliverable, which means a media plan built without checking buy box status is allocating money that cannot be spent.
Branded search terms being absorbed by non-brand campaigns. Because branded traffic converts far better, it inflates non-brand performance and conceals what genuine acquisition actually costs. It is one of the most consistently valuable audit findings.
The same product targeted by multiple campaigns on overlapping terms, so you bid against yourself and raise your own CPCs. It is fixed through structure and negative keywords rather than through bidding.
Yes, and these are among the most consequential findings. Misfiled campaigns booking revenue to the wrong product line produce reported returns that are confidently wrong, and every budget decision made on them inherits the error.
A prioritised findings document with each item quantified and tied to specific products and campaigns, supporting workbooks with the underlying analysis, and a 90-day action plan sequenced by impact and effort.
Optionally. Some clients take the findings to their existing team or agency; others engage TNOMADS to implement. The audit is deliberately structured to be usable by whoever executes it, including someone else.
Annually as a baseline, and additionally whenever performance changes without explanation, when agencies or platforms change, before a significant budget increase, or ahead of a commercial decision that depends on the numbers being right.
Yes, and cross-platform audits usually find issues single-platform reviews miss — inconsistent measurement definitions, duplicated targeting across networks and budget allocation that does not match revenue distribution.
Very. It gives you an independent baseline of account condition, so you can brief candidates against known problems and later distinguish genuine improvement from regression to the mean.
That is a legitimate outcome and it gets reported as such. An audit confirming your structure is sound and your measurement is trustworthy is a useful thing to be able to tell a board, even if it is less satisfying than a list of problems.
The 90-day plan sequences the fixes. Structural remediation usually comes first, then measurement, then budget changes. See retail media strategy for planning what comes after the fixes.

Why commission an audit from TNOMADS?

13+years of pattern recognition across accounts and categories
Nostake in the answer — fee is not tied to your spend
$every finding quantified, not listed as a general observation
1:1the audit is done by the consultant, not delegated

About the author

Who wrote this page?

Ana Perez Ibarz

Senior Retail Media Consultant

Amazon AdsAmazon DSPAmazon Marketing Cloud Walmart ConnectInstacartRetail Media Strategy

Last reviewed 16 August 2026

Ana Perez Ibarz is the founder of TNOMADS Consulting and has spent 13+ years in retail media and performance marketing. She manages live campaign operations across Amazon Ads (Sponsored Products, Sponsored Brands, Sponsored Display, DSP and Amazon Marketing Cloud), Walmart Connect, Instacart, Kroger Precision Marketing, Target Roundel, Loblaws Advance, DoorDash, Criteo, Google Ads and Meta.

On audit work, Ana has reviewed accounts ranging from single-product sellers to advertisers spending at substantial monthly scale across multiple networks. Findings are quantified at product and campaign level and delivered with the underlying workings attached, so the client's team can verify the analysis rather than take it on trust.

She works as a subcontracted specialist for agencies as well as directly with brands, and writes on retail media measurement, incrementality and commerce media architecture. Based in Granada, Spain; operating across North America and Europe.

More about Ana and TNOMADS →

Sources

Where do these figures come from?

A note on these sourcesHow much performance improves from structural changes alone varies substantially by account, and cannot be responsibly estimated before seeing your data — any consultant quoting you a percentage in advance is guessing. What can be said is that recoverable structural waste is present in the substantial majority of accounts reviewed.

Related services

What should you read next?

Retail Media Strategy

What to build once the structural problems are fixed.

Amazon PPC

Where most audit findings concentrate for Amazon-led brands.

Walmart Connect

Auto/Manual cannibalisation and negative gaps are common here.

Incrementality

The measurement layer most audits find missing entirely.

Amazon Marketing Cloud

Where attribution and overlap findings get quantified properly.

Google Ads

Conversion tracking problems that invalidate everything downstream.

Ready to see what your account is hiding?

Find the inefficiency. Fix it. Grow.

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