CPM
Cost per 1,000 impressions.
Glossary
Advertising metric definitions
CPC
Cost per click.
CTR
Click-through rate: clicks divided by impressions.
ROAS
Return on ad spend: revenue divided by ad spend.
Break-even ROAS
The minimum ROAS needed to cover contribution costs before profit.
Page RPM
Revenue per 1,000 pageviews.
eCPM
Effective revenue per 1,000 ad impressions.