World wide eCPM report of banner ads is lower than rewarded and interstitial Ads depending on the size and geographical area.
Rewarded video ads are full-screen adverts that consumers can view in return for in-app prizes,
Interstitial ads allow users to skip the ad after a time.
Increase the eCPM rate by optimising your App. USA has high eCPM value, thus Improve the user traffic from USA in your App.
Ad mediation is the management of multiple ad networks through a single SDK to help publishers increase CPMs