App Campaigns for Engagement Now Available for Eligible Advertisers Globally
https://support.google.comApp campaigns for engagement make it easy for you to stay connected with existing users by directing them to fresh and relevant content in your app. Google is now making App campaigns for engagement available to all eligible advertisers globally to help you reach your users with relevant ads on Google Search, Play, YouTube and over 1 million apps in their network.
To be eligible for App campaigns for engagement, you must have a minimum base of 250,000 installs so your audience is large enough to achieve your campaign goals.
You can also showcase the most relevant content in your app by linking your Google Merchant Center or business data feeds to your App campaigns for engagement. Starting early next year, feeds can also help make your app more discoverable by expanding how your engagement ads appear on Google.com