10 Attribution Reports Every E-Commerce CMO Should Review Weekly

Only 9 percent of marketers say they trust their data enough for accurate reporting, and 32% review marketing reports once a month or less, even as the average team now handles 230% more campaign data than in 2020.

That combination, more data, less trust, slower review, is exactly how a week of inefficient spend turns into a quarter of it before anyone notices.

The fix isn’t more dashboards. It’s the right ten reports, reviewed on a cadence tight enough to actually change next week’s decisions.

The 10 Reports

1. Blended MER Trend

Total revenue over total marketing spend, tracked weekly rather than checked in monthly. This is the top-level health check that should move the least dramatically week to week, so a sudden shift here is worth investigating immediately.

2. New-Customer MER (Acquisition Efficiency)

Blended MER can look healthy while new-customer acquisition quietly loses money, propped up by strong retention. A weekly new-customer MER view isolates whether the business is actually buying new customers profitably, not just efficiently overall.

3. Platform-Reported vs. First-Party ROAS

Side-by-side, by channel, updated weekly. This is the trust-gap report, the one that shows exactly where a platform’s own number is running ahead of what verified, click-only data says actually happened, before that gap drives a bad scaling decision.

4. Cross-Channel Deduplicated Revenue

Reconciled revenue by channel, with double-counting removed. Meta, Google, and TikTok reporting revenue add up to more than actual store revenue is one of the most common ways a marketing team ends up making decisions off inflated numbers without realizing it.

5. Creative Fatigue and Frequency

Frequency by audience segment and CTR trend by ad, checked weekly, catches creative fatigue before it shows up as a CPM spike. Waiting for the CPM increase to notice means the fatigue has already been costing money for a week or two.

6. Cohort LTV by Acquisition Channel

Which channels bring in customers who actually stick around, not just customers who convert once. A channel with strong first-purchase ROAS but weak repeat-purchase behavior looks very different once this report is in weekly rotation instead of a quarterly afterthought.

7. Contribution Margin by Channel

Revenue by channel is not the same question as profit by channel. A weekly view of contribution margin, not just revenue, is what actually tells you whether scaling a given channel helps or quietly erodes margin.

8. Incrementality and Holdout Test Status

Which channels have a validated, causal lift number on file, and which are overdue for a retest. Incrementality decays, so a weekly status view keeps that decay from going unnoticed for a full quarter.

9. Tracking and Signal Quality

Conversions API and Events API deduplication rates, Event Match Quality scores, and any sudden drop in server-side event volume. Tracking breaks silently far more often than it breaks loudly, and a weekly health check is what catches it before a full month of degraded data has already shaped decisions.

10. Top and Bottom Performers

A rolling list of what’s actually earning more budget and what’s due to be cut, refreshed weekly rather than rebuilt from scratch at the end of each month. This is the report that turns the other nine into an actual action, not just a status update.

Why Weekly, Specifically

The decision-first principle behind good dashboards is simple: if a number doesn’t influence what happens next week, it doesn’t belong in a weekly report.

All ten of these pass that test.

They’re not vanity metrics or lagging indicators meant for a board deck once a quarter. Each one is designed to change a specific decision, what to scale, what to cut, what to retest, before a full reporting cycle passes and the cost of not knowing compounds.

If your weekly reports are still built off platform-reported numbers, the first two reports on this list are the ones most likely lying to you right now. Book a live AdBeacon demo to see what a weekly reporting stack built on verified, first-party data actually looks like.

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FAQ

Do I need all 10 reports, or can I start with a few?

Start with blended MER, platform-reported vs. first-party ROAS, and tracking and signal quality. Those three catch the most common and most expensive blind spots first, and the remaining seven can be layered in as your reporting cadence matures.

How is this different from a standard marketing dashboard?

A dashboard is a live, always-updating view. This is a specific weekly review cadence built around decisions, what to scale, cut, or retest, not a passive display of every metric available. The distinction matters because a dashboard nobody reviews weekly has effectively become a report nobody reads.

What’s the single most commonly skipped report on this list?

Tracking and signal quality. Most teams check it only when something already looks visibly wrong, by which point a tracking break may have been quietly distorting every other report on this list for weeks.

Should agencies build this same weekly cadence for clients?

Yes, with the caveat that agencies managing multiple accounts need this to scale without becoming ten manual pulls per client per week. A reporting stack built on consistent, first-party data across every account makes that cadence sustainable instead of a Monday-morning scramble.