Too Long; Didn't Read
Interstitial ads are full-screen ads in any mobile application. These ads appear when the user navigates or transits from one page to another within the app. You can also see these ads when a web page loads. The cost per mille (CPM) for interstitial ads is higher because of their placements and layout. Advantages include higher revenue, engagement, CTR, and revenue comes at the cost of user experience. The aim is to showcase your product to the user so that they immediately react to the ad without skipping it.