How to Monitor and Report on Ad Performance
This domain covers metric literacy, attribution and reporting habits that make performance legible to stakeholders.
Define metrics precisely
Impressions are served ads; CTR is clicks divided by impressions; CPC is spend divided by clicks; CPM is cost per thousand impressions; conversion rate is conversions divided by clicks or sessions; CPA is spend divided by conversions; ROAS is revenue divided by spend. Compare LTV to CAC, not CPA to revenue alone.
Attribution and hygiene
First-click, last-click, linear and data-driven models credit different touchpoints, so state the model. UTM parameters, consistent naming and matched conversion events keep the platform, HubSpot and analytics numbers reconcilable. Report on a fixed cadence with target versus actual and a stated action.
Worked example
Campaign A spends $1,000 for 100 conversions: $10 CPA. Campaign B spends $2,000 for 150 conversions: $13.33 CPA. A looks better on efficiency, but if B can keep absorbing budget at $13.33 and sales can handle the volume, B adds 50 conversions A cannot. Reasoning: decide on marginal CPA and capacity, not average CPA alone.
Traps that cost marks
Reporting last-click as truth when most journeys are multi-touch; comparing CTR across different formats as if equivalent; showing impressions without context; inconsistent UTMs that break joins; ignoring lead quality so a cheap CPA hides unqualified pipeline.