In this video, you’ll learn how to create and use the Data layer variable in Tag Manager to capture data from your website’s data layer. We’ll explain how the data layer stores structured information about user actions and how to reference specific keys to extract values. You’ll see how to access both simple and nested data, such as e-commerce details, using dot notation and test your setup in debug mode. By the end, you’ll know how to use Data layer variables to collect accurate, dynamic data for advanced tracking and analysis.