May 18, 2021
In preparation for more sophisticated forms of linear TV advertising sales, syndicated ad-spending research firm Standard Media Index is adding so-called “effective CPMs,” or eCPMs, to its database.
The eCPMs are an estimate of the explicit cost of delivering the advertiser’s target audience. They are calculated by dividing the cost of the ad by the actual audience delivered, excluding so-called “bonus weight,” makegoods, etc.