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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KPIs

Measurement Frameworks

Metrics

Alphabetical index archive

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

Audio Duration mobile-advertising-glossary-metrics

Captures how long a user listens to an audio ad (e.g., complete plays, average duration, listen-through rate).

Metrics

Cost Per Install (CPI) mobile-advertising-glossary-metrics

CPI measures the cost to acquire a single app install: CPI = Total Spend / Number of Installs. It’s a standard KPI for user acquisition campaigns in the mobile app ecosystem.

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

Bid Rate mobile-advertising-glossary-metrics

In programmatic advertising, this is the proportion of total ad requests for which a DSP submits a bid. A low bid rate might indicate strict targeting or bidding filters.

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

Attention Metrics mobile-advertising-glossary-metrics

Metrics that assess how much attention users give to an ad, using data signals like eye tracking, time in-view, or interaction depth.

Metrics

Fraud Rate mobile-advertising-glossary-metrics

The percentage of ad interactions (clicks, installs, impressions) that are determined to be fraudulent, such as bot activity, fake installs, or click spamming. High fraud rates can skew performance data and waste budget.

Metrics

Cost Per Action (CPA) mobile-advertising-glossary-metrics

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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