Impressions

Impressions are a measurement to show the performance of your banners and a statistics to give both advertisers and site owners the reporting what has been displayed on what zone , and if the view has ended on a click or not, also it will give you more details about visitor information so that you can aggregate your data and see which country, device, browser, has the best and worst conversion.

also, it shows what is the page was used to display this zone.