At last, the good articles about creating and maintaining a web analytics Data Layer for tag management are coming to light. Josh West at Web Analytics Demystified has written an article entitled “Getting the Data Layer Right” and while it does not mention any specific tag management system (TMS), it builds the case for making careful choices when setting up a data layer and reasons for using a data layer rather than relying on query strings or accessing DOM elements directly.
I became aware of Josh’s post when an email arrived from Jan Exner’s Web Analytics for Developers blog, and it contained his commentary ‘”Data Layer” Tips’ which provides additional guidance more closely related to using Adobe SiteCatalyst/Adobe Analytics. This is primarily because he mentions using Processing Rules and Context Variables and s_code.
Enjoy these articles and enjoy the benefits of implementing a data layer for your current or next web analytics project!