Tutorial: Test adoption of new AdMob ad formats

Step 5: Decide whether to roll out the new ad format



After letting the test run for several days or weeks, your app has probably supplied enough data for Firebase to construct recommendations.

If Firebase A/B Testing determines that the variant showing the new ad format is the winner, you can start showing the ad format to all users exposed to the experiment – just click the Roll out variant button in the A/B Testing page.

<span class=Firebase console UI showing button to roll out a variant to selected users" class="screenshot">

Alternatively, if Firebase determines a winner, you can end the experiment, then set the Remote Config parameter value to the winning variant's value. You can make this be the setting for all your users or even just a subset of your users.

However, if Firebase hasn't yet determined a clear winner, you can either continue running the experiment to gather more data, or end the experiment if it's already been running for a long period with inconclusive results.


And that's it! You've completed the tutorial for testing adoption of new ad formats using Firebase.




Step 4: Start the A/B test & review test results




Developer documentation for Firebase

Updated Feb 25, 2025

Firebase gives you the tools and infrastructure you need to build better mobile and web apps, improve app quality, and grow your business.

Updated May 9, 2023

Developer documentation for Firebase

Updated Feb 25, 2025