Now that you've written your app, one way you can monetize it is by enabling it to carry advertising.
To configure your app to carry ads, you must integrate an Android Instant Apps-compatible ad-network SDK into your app. The Google Mobile Ads Lite SDK is one such SDK. For more information about integrating an ad-network SDK, see Google Mobile Ads Lite SDK and AdMob in Android Instant Apps.
If you plan to integrate a different ad network's SDK into your app, consider reaching out to your relevant ad network to have them integrate with Android Instant Apps.