Developer Guide | Google Tag Manager for Web Tracking | Google DevelopersSend feedback The data layer Stay organized with collections Save and categorize content based on your preferences. The data layer is an object used by Google Tag Manager and gtag.js to pass information to tags. Events or variables can be passed via the data layer, and triggers can be set up based on the values of variables. For example, if you fire a remarketing tag when the value of purchase_tot
