https://support.google.com/adsense/answer/4643299?hl=en-GB&ref_topic=19363
Cost-per-engagement (CPE) - Google AdSense Help
With cost-per-engagement (CPE) bidding, advertisers only pay when users actively engage with ads. For example, advertisers pay for lightbox ads (a type of...
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https://unity.com/glossary/cost-per-engagement
What is Cost Per Engagement (CPE): Cost Per Engagement Definition | Unity
Cost Per Engagement (CPE) is a pricing model used in user acquisition campaigns where app advertisers only pay for post-install events.
cost per engagementwhat iscpedefinitionunity