What does Impressions mean?

Impressions refer to the number of times a piece of content, ad, post or link is shown to users. One impression is counted each time the element is displayed according to the rules of the specific platform. So if the same person sees an ad several times, several impressions may be counted. This figure therefore differs from reach, which usually expresses the number of unique users. Impressions are tracked in PPC advertising, on social media or in search results and help evaluate how often content was shown to the audience. On their own, however, they don't tell you whether a user clicked on the content, converted or paid more attention to it.