Impression share is the percentage of times an ad was actually shown out of the total number of times an ad was shown. It is calculated as follows: Impression share = Impressions / Total number of times an ad was eligible to be shown.
Impression share is the percentage of times an ad was actually shown out of the total number of times an ad was shown. It is calculated as follows: Impression share = Impressions / Total number of times an ad was eligible to be shown.