What is this called when you win an auction, and your ad is served to a person on X?
Explanation: The correct answer is Impression because in digital advertising, an impression occurs each time your ad is successfully served and displayed to a user on X after winning the auction. Winning the auction allows your ad to appear, but the term that describes the actual delivery to a user’s screen is an impression. Auction Win refers to the bidding process outcome, Purchase refers to a conversion, and Click through happens only if the user interacts with the ad by clicking it.