Welcome to AdMob Help Center. Due to the holiday season our support is currently unavailable from 17th December to 4th January. We encourage you to visit our Help Center and community forums for additional resources. We apologize for any inconvenience this may cause and appreciate your patience during this time.
A label assigned to an ad unit when it's created to determine the types of ads it can show and how they will look in your app. AdMob supports the following ad formats: banner, interstitial, rewarded, and native.