Marketing & Advertisingintermediate
CPM
Cost Per Mille
Definition
The cost to show your ad 1,000 times (impressions). CPM = (Total ad spend ÷ Total impressions) × 1,000.
Why it matters
CPM measures how competitive your audience is. A high CPM means lots of advertisers are targeting the same people.
Example
Meta charges you £12 to show your ad 1,000 times. Your CPM is £12. At peak shopping times like Black Friday, CPMs often spike to £30+.
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