PPC – (Pay Per Click) – A form of digital advertising where an advertiser pays only when a user clicks on the advertisement.
Clicks – The number of times a user mouses over an advertisements and activates the ad by clicking the mouse.
Impressions – The number of times an advertisement is displayed on a page.
CTR (Click Through Rate) – The percentage of clicks on an advertisement. Calculated as Clicks/Impressions.
Cost – The total amount of money spent on advertising activity over a given period of time.
CPC – (Cost Per Click) – The average cost of each individual click on an advertisement or a groups of ads. Calculated as Cost/Clicks.