What Is RPM and Why It Matters for Publishers RPM, or Revenue Per Mille, is one of the most misunderstood yet critical metrics for content publishers. It reflects how much money you earn per 1,000 pageviews—not just per 1,000 ad impressions like CPM. That makes it a broader measure of monetization performance. Whether you're using AdSense, a programmatic platform, or direct-sold campaigns, RPM tells you the total revenue outcome per every 1,000 sessions. It's a bottom-line indicator that helps you evaluate the success of your entire monetization stack. How RPM Differs from CPM While RPM and CPM may seem similar, they measure different aspects: CPM: Cost per 1,000 ad impressions. This tells you what advertisers pay for showing their ad. RPM: Revenue per 1,000 pageviews. This tells you what you actually earn per pageview, across all ad units combined. Here’s a quick example. If you serve 3 ads per page and each ad has a CPM of $1.50, your page RPM could be $4.50...
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