Fill Rate
Fill Rate measures the percentage of available ad impressions that are successfully sold and served. It is calculated as: (Filled Impressions ÷ Total Ad Requests) × 100.
A 100% fill rate means every request resulted in an ad being displayed, while a lower rate suggests missed monetization opportunities. For instance, a 70% fill rate indicates that 30% of impressions went unfilled due to low bids, lack of demand, or restrictive targeting.
Improving fill rate involves connecting to more demand sources, optimizing floor prices, and employing header bidding or mediation strategies. A strong fill rate signals healthy demand and effective inventory management.
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