Google decided with AMP HTML cache to copy the world's content to their own CDNs on google.com, effectively keeping visitors on the google.com domain even after clicking a Google search result. This creates an interesting analytics challenge when your visitors are viewing your content, but are still on google.com. And when that visitor clicks a link to eventually arrive on your original website, it becomes difficult to build an accurate visitor path report using traditional web analytics tools.
Since data is the foundation for the Tealium solution, setting up a consistent data layer is a vital first step for implementation. The data layer defines attributes about your website or mobile app, such as country code or page name, as well as important user behaviors to track, such as logins and purchases.