Ad Fill Rate definition

Ad Fill Rate

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

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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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A ⁽⁹⁾B ⁽²⁾C ⁽¹⁰⁾D ⁽²⁾E ⁽¹⁾F ⁽²⁾I ⁽⁵⁾L ⁽³⁾M ⁽²⁾P ⁽¹⁾R ⁽²⁾S ⁽⁵⁾U ⁽¹⁾V ⁽¹⁾W ⁽¹⁾

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More terms of Metrics

Daily Active Users (DAU) mobile-advertising-glossary-metrics

DAU measures the number of unique users who engage with the app on a daily basis. It's essential for tracking regular usage.

Metrics

App Launch Time mobile-advertising-glossary-metrics

Time from tapping the app icon until users see and interact with the app. Includes Time to Initial Display (TTID) and Time to Fully Drawn (TTFD). Typical targets: < 5 s cold start, < 1.5–2 s warm/hot start

Metrics

Cost Per Mille (CPM) mobile-advertising-glossary-metrics

CPM, or cost per thousand impressions, is a metric used to price ad inventory based on 1,000 ad impressions. It’s often used for awareness campaigns focused on visibility rather than clicks or conversions.

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

Session Duration mobile-advertising-glossary-metrics

Time spent within an in-app branded experience. Complements session length and reflects depth of engagement.

Metrics

Click-Through Rate (CTR) mobile-advertising-glossary-metrics

CTR is the ratio of clicks to impressions, expressed as a percentage. It shows how effective an ad is at encouraging users to engage: CTR = (Clicks / Impressions) * 100. High CTR often indicates strong ad relevance and appeal.

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

Impression mobile-advertising-glossary-metrics

An impression is counted each time an ad is served and appears on a user’s device screen, regardless of whether the user interacts with it. It is one of the most basic and foundational ad delivery metrics used to measure reach and exposure.

Metrics

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