In-App Advertising involves both the Publisher and Advertiser sides, which often arises confusion for beginners or laymen. The technical jargons and narration make it happen so. eCPM and CPM are one prime example of such terms used interchangeably without knowing the difference between their literal meanings. These terms are often discussed when a publisher is busy finding ways to Maximize Ad Revenue, and the advertiser is keen on evaluating the campaign results. This infographic walks you around this similar-looking yet poles apart concepts in a casual manner.