Impressions refer to the number of times a piece of content, such as an advertisement, webpage, or social media post, is displayed to users. Each time the content appears on a user's screen, it counts as one impression, regardless of whether the user interacts with it. Impressions are a key metric in digital marketing and analytics, helping businesses measure the reach and visibility of their campaigns. Unlike clicks or engagements, impressions only track the exposure of content, not user actions.