Glossary
Sales funnel: the stages and the metric each one owns
The sales funnel in paid media: what to measure at the top, middle and bottom, and why each stage needs its own metric to avoid a misleading report.
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A sales funnel describes the stages a person moves through between not knowing you and buying. In paid media it stops being theory and becomes a practical decision: which metric you demand from which campaign. Demanding sales from an introduction ad is the most common mistake and the most expensive one.
The three stages and what each does
Top. The person does not know the solution exists. The ad's job is to be seen and understood. Cold audience, introduction creative, simple message.
Middle. They know it exists and are comparing. The job is to answer objections and prove competence. Engaged audiences, proof creative, an offer to get in touch.
Bottom. They have decided to buy and are choosing from whom. The job is removing friction. Remarketing, direct offer, short path.
The metric each stage owns
| Stage | Question | Metric |
|---|---|---|
| Top | How many saw and understood? | Reach, CPM, video retention |
| Middle | How many cared enough to act? | CTR, CPL |
| Bottom | How many bought, and at what cost? | CPA, conversion rate, sales by source |
The stage-by-stage breakdown, with what to compare inside each one, is in funnel stage metrics.
The mistake that breaks the reading
Judging every campaign by the same column. The report shows cost per result on every row, and the top-of-funnel campaign shows up as the most expensive line in the account. Someone turns it off. Three weeks later the bottom of the funnel gets worse too, because nobody is entering anymore.
The short rule: each campaign answers for the metric of its own stage. Only the whole operation answers for revenue.
When the funnel does not apply
Not every business has a long funnel. A low-ticket impulse purchase happens in one session, and splitting it into three stages adds complexity without gain. The signal is practical: if most sales close on first contact, run one stage and spend the effort on creative instead.
When the cycle is long, the opposite holds, and the handoff to sales matters more than the setup. The split between the lead marketing delivers and the lead sales accepts is in MQL vs SQL.
The tracking template that separates stages without becoming three reports is on the paid media reporting page.
Frequently asked questions
What are the stages of a sales funnel?
Top, where someone discovers a solution exists; middle, where they compare options; and bottom, where they decide to buy. In paid media each stage has its own audience, creative and metric.
Which metric belongs to each stage?
Top: reach, cost per thousand impressions, video retention. Middle: clicks, click-through rate, cost per lead. Bottom: cost per acquisition, conversion rate, sales by source.
Do I need separate campaigns per stage?
Not strictly, but it helps. Separate campaigns let you judge each stage by its own metric instead of demanding sales from an ad whose job was introducing the brand.