Impression Share is defined as the ratio of the impressions you've received to what?

Impression Share is defined as the ratio of the impressions you've received to what?

• A. The click-through rate (CTR) of your ads.
• B. The number of impressions you've received divided by the estimated number of impressions available.
• C. The total cost of your ad campaign.
• D. The number of clicks your ad has received.

Answer: (B)

Impression share shows what portion of the total impressions you were eligible to receive that you actually did receive. It’s calculated as impressions you’ve received divided by the estimated number of impressions available (the eligible impressions). This matters because it separates the impressions you could have shown from those you actually did, accounting for budget, bid, and targeting constraints. For example, if you earned 1,200 impressions but were eligible for 2,400, your impression share is 50%. The other metrics like CTR, total cost, or total clicks don’t define impression share, which is about potential versus actual exposure. Improving budget, bid, ad rank, or broader targeting can raise your impression share.

Impression share shows what portion of the total impressions you were eligible to receive that you actually did receive. It’s calculated as impressions you’ve received divided by the estimated number of impressions available (the eligible impressions). This matters because it separates the impressions you could have shown from those you actually did, accounting for budget, bid, and targeting constraints. For example, if you earned 1,200 impressions but were eligible for 2,400, your impression share is 50%. The other metrics like CTR, total cost, or total clicks don’t define impression share, which is about potential versus actual exposure. Improving budget, bid, ad rank, or broader targeting can raise your impression share.