In pay-per-click (PPC) advertising, an impression refers to a single instance of an ad being displayed on a webpage. In other words, an impression is counted each time an ad is shown to a user, regardless of whether the user clicks on the ad or not.
Impressions are an important metric in PPC advertising because they help advertisers understand how often their ads are being shown to users. This can be useful for determining the reach of an ad campaign and for identifying opportunities to improve the visibility of the ads.
It is important to note that impressions are different from clicks. While an impression counts each time an ad is displayed, a click only counts when a user actually clicks on the ad. Advertisers typically want to maximize both impressions and clicks in order to get the most out of their PPC campaigns.
