Ad impressions are defined as the call-up of advertising media, such as banners on an ad server. They indicate the number of interactions with the advertising messages and are often also referred to as ad views.
Ad impressions are an important indicator that can later be used in conjunction with other performance values (e.g. clicks, leads or sales) to determine conversion ratios. These ratios allow the efficiency of the advertising media to be assessed and, if necessary, optimized.