Below are answers to some of the most frequently asked questions about AdMob mediation.
Why do my house ads have a low fill rate?
Your mediation settings tell AdMob how to choose between the AdMob Network, third-party ad networks, and house ad campaigns. The eCPM value determines the order of the ad network to serve ads, with the highest eCPM value served first. That means, if AdMob network or another ad network has a higher eCPM value with 100% or close to 100% fill rate, then the other ad sources including house ad campaigns will be served less often.
If you want to serve more house ad impressions to your house ad campaigns, try the following workaround:
- Set up an eCPM Floor for AdMob network with a reasonably high eCPM value.
- Set up a house ad campaign with the second highest eCPM value.
- Set the AdMob network eCPM value with the next highest eCPM value.
What this accomplishes is that AdMob network will first serve only ads that pay at least the eCPM floor value. Over time, this set up will maintain or increase AdMob network's eCPM value while the fill rate is likely to decrease, allowing the next ad source in mediation (in this case, house ad campaigns) to serve ads.
How do I delete AdMob Network from mediation?
My house ads aren't working
How does the AdMob Network eCPM floor work?
How does eCPM floor work with other ad networks during mediation?
Which third-party ad networks support optimization?
How does AdMob obtain data from third-party ad networks?
Do I need to update the SDK to use ad network optimization?
What data does AdMob look at to determine the CPM?
Can I mix and match optimization, manual eCPM, and floor across different ad networks?
Yes, it's possible to use different combinations of optimization, manual eCPM, and AdMob Network floors across ad networks in the same mediation group.
Note: Some ad networks may not support optimization, and setting a floor is only available for the AdMob Network.
What happens if AdMob can't retrieve the eCPM data from an ad network?
Why is the network status still "Pending optimization"?
When you enable optimization for a third-party ad network in mediation, AdMob begins analyzing your app's traffic to understand the best way to optimize its eCPM. During this analysis period, you may see the "pending optimization" status appear in the ad networks table.
AdMob continuously optimizes eCPM based on the latest data available, so you may occasionally see the "pending optimization" status even after the initial analysis is complete. For example, if there is insufficient traffic from an ad network over several weeks, AdMob may determine that better quality data is needed to accurately calculate the eCPM. Optimization will be re-enabled once the ad network's traffic increases and AdMob has better data to analyze.