What it is
Cost per target action
Cost of one action you consider a result: a signup, a deposit, an install. This is the only metric we use to cut a placement — reach and views do not factor into that decision.
Example
What it looks like in numbers
A flight cost $13,000 and delivered 840 verified signups. CPA = $15.50. If the cap is $13, the flight is unprofitable overall — but within it, four channels delivered $10 and two came in at $34. We cut the two, not the flight.
Related terms
Next to it in the report
In practice
Where this shows up
Pages where CPA is not explained but used — in a channel’s mechanics, in a launch breakdown or in a report.
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