Google Marketing Platform is a third-party ad server that allows you to create and place ads across the web, create floodlight tags, and view consolidated campaign insights from all your Google Marketing platforms. The CallTrackingMetrics integration with Google Marketing Platform allows you to send call data to Google so that you can see your call conversions along with your other Google Marketing Platform reporting.
1) Navigate to Settings → Integrations → Google Marketing Platform.
2) Enter your Google Advertiser ID and Google login credentials -find your advertiser ID using this Guide
3) Click Connect to Google Marketing Platform
Once you have linked you will find a new action when setting up a trigger. The new action will show as "Upload Google Marketing Platform Conversion". You can use this trigger action to send floodlights as you see fit.