CPM · Cost per mille
In plain terms
The price paid for your ad to be shown a thousand times.
Formula
Technical meaning
It measures the cost of attention, not the result. It varies with competition and rises during busy periods such as Black Friday or the holidays. A low CPM means nothing if nobody clicks: it is always read alongside click-through rate and cost per result.
Formula
CPM = spend ÷ impressions × 1,000
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Black Friday 2026: preparing acquisition for a Swiss online store
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