What is the term for the metric that measures the number of times your ad is shown to a user?

The term you are looking for is "Impression." In digital marketing and advertising, an impression refers to the metric that measures the number of times an advertisement is displayed to a user. Every time an ad appears on a user's screen, it is counted as one impression, regardless of whether the ad is clicked or interacted with. This metric is crucial for advertisers as it helps them understand the reach and visibility of their campaigns. Impression counts can indicate how well an ad is doing in terms of being viewed by a target audience, which can be particularly useful when assessing brand awareness. Keep in mind that high impression numbers do not always correlate with engagement or conversions, as a user may see an ad multiple times without taking action.