What is the best metric when it comes to monetization?
eCPM of individual ad units is often unreliable, because different ad placements on the page influence each other.
Page RPM, or aggregate performance of all ad units on the page, shows a clearer picture. Consider, however, a test when additional ad units are added to the page. Page RPM might go up, but session depth might go down, resulting in overall revenue loss.
We think that Session RPM, or the revenue earned per 1000 user sessions, is the most practical and reliable metric. It takes into account both user experience and monetization performance.Read more about Session RPM in our blog