After installing Google Tag Manager for your Magento 2 store, now time to add User-defined variables into GTM.
We prepare User-defined variables for next step: Configure Google Analytics eCommerce Tracking.
Watch this screencast to setup Google AdWords Remarketing in Google Tag Manager.
In this guide, we will show to to add a Google Universal Analytics (include eCommerce Tracking).
Before doing this step, make sure you have added user-defined variables.
In your Google Tag Manager Workspace go to Tags, click New to add a new Tag.