KPIs Every Media Buyer Should Track

The sheer number of metrics inside an ad platform's dashboard easily leads to analysis paralysis — looking at everything at once without knowing which number actually matters right now. Here's a breakdown of the KPIs that matter at each stage of the funnel.

Top of funnel: CTR and CPM

CTR (click-through rate) and CPM (cost per thousand impressions) reflect creative quality and targeting precision. A low CTR with reasonable targeting almost always means the creative isn't landing — look here first, not at campaign settings.

Middle of funnel: CR and CPL

CR (conversion rate from click to target action) and CPL (cost per lead) reflect the quality of the landing page plus offer combination. A strong CTR paired with a weak CR usually points to a mismatch between the ad's promise and what the visitor actually finds on the page.

Bottom of funnel: EPC and ROAS

EPC (earnings per click) and ROAS (return on ad spend — see ROI vs. ROAS: How to Calculate Both) reflect the funnel's final economics. These are the metrics that decide whether to scale, regardless of how good the top-of-funnel numbers look.

Frequency and audience burnout

Frequency (average impressions per user) is an underrated indicator — rising frequency paired with a dropping CTR almost always signals creative burnout on a given audience, even while overall impression volume and budget stay stable.

Reading metrics together

No single metric tells the whole story: a great CTR with poor ROAS points to a post-click problem (landing page, offer), while a weak CTR with strong conversion among the few who did click can mean the targeting is narrow but on-target — worth expanding reach rather than swapping the creative.

A daily monitoring dashboard

• CTR and CPM — creative and targeting quality check
• CR and CPL — landing page plus offer check
• ROAS — the final scale-or-kill decision
• Frequency — the signal to refresh creative

Set up automatic alerts for sharp deviations in your key metrics — that lets you react within hours instead of catching a problem days later during a routine review.

The takeaway

Each metric owns a stage of the funnel: CTR and CPM for creative and targeting, CR and CPL for the landing page and offer, ROAS for the final economics. Reading them together, not in isolation, is what actually pinpoints where a campaign is losing efficiency.