|Package||AdMob is now part of Firebase and the Google Mobile Ads SDK is delivered via Google Play services platform. It is no longer available as a standalone SDK.|
See the reference docs for details on Google Play services.
The Google Play services library does support devices that don't have Google Play, but the library cannot automatically update itself the way it does on devices with Google Play. To update such devices, you must manually update the Google Play services SDK in your app.
The Google Play services library does support publisher IDs from the legacy AdMob console and is compatible with existing mediation adapters.
We provide a number of sample apps that demonstrate the use of the Google Mobile Ads SDK. You can find these open source applications at this GitHub repository:Android (Google Play services) samples