What is eCPM? Why does it matter as an advertiser?

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eCPM is the crucial metric our system uses to decide which advertising campaign to serve to a given publishing campaign. Because Chartboost advertisers bid per click or install (instead of per impression), Chartboost eCPM is a combination of a campaign's Install Rate (IR), Click-Through-Rate (CTR), and bid that reflects the overall competitiveness of the campaign. So the better your ads perform, the more high-quality traffic you receive. More optimization information