Variables

To a computer programmer, a variable is a symbol in code that can be used to represent a value that will change. A Tag Manager variable performs that same function. Tag Manager variables are used in both triggers and tags:

• Variables in triggersare used to define filters that specify when a particular tag should fire.
  Example: Fire a pageview trigger when the url variable is “example.com/index.html”.
• Variables in tagsare used to capture dynamic values.
  Example: Capture and apply the transaction value and products purchased to a key events tag.

Tag Manager provides a set of commonly-used built-in variables in each container. You can create additional user-defined variables to suit your specific requirements.