Cost Per Action (CPA) definition

Cost Per Action (CPA)

CPA is the amount spent to drive a specific user action (e.g., a subscription, sign-up, or in-app purchase). It’s commonly used in performance-based advertising models.

Metrics

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Ad Fraud and Scamming in Digital Advertising Glossary

Ads.txt / App-ads.txt Glossary

Mobile Advertising Glossary: Metrics and KPIs

oRTB Glossary

OTT / CTV Programmatic advertising glossary

Performance Marketing Glossary

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KPIs

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More terms of Metrics

Ad Fill Rate mobile-advertising-glossary-metrics

The percentage of ad requests that are successfully filled with an ad impression: Fill Rate = (Filled Requests / Total Requests) * 100. Low fill rates may suggest weak demand or misconfiguration.

Metrics

Cost Per Click (CPC) mobile-advertising-glossary-metrics

CPC is the average amount paid by the advertiser for each user click on their ad. It's a common pricing model in paid search and social media advertising.

Metrics

Win Rate mobile-advertising-glossary-metrics

The percentage of submitted bids that result in an ad impression: Win Rate = (Won Bids / Submitted Bids) * 100. Low win rates might suggest competitive markets or underbidding.

Metrics

Ad Frequency mobile-advertising-glossary-metrics

The average number of times an ad is served to the same user. Helps assess saturation and avoid ad fatigue.

Metrics

Session Frequency mobile-advertising-glossary-metrics

How often a user returns to the app in a given time frame. High frequency suggests strong engagement and app stickiness.

Metrics

Unique Reach mobile-advertising-glossary-metrics

The number of unique users (or devices/households) exposed to an ad at least once. Useful for understanding total unduplicated audience.

Metrics

Skips / Skip Rate mobile-advertising-glossary-metrics

For skippable ads, this indicates how often users skip. High skip rates can reflect low ad relevance.

Metrics

Social Media Metrics mobile-advertising-glossary-metrics

Includes shares, comments, mentions, and sentiment around a campaign. Particularly relevant for cross-channel or influencer campaigns.

Metrics

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