Acquia CDP

Tracking users across subdomains

To track visitors across multiple subdomains, add a domain name parameter to $A1Config to make the user visible across subdomains:

var $A1Config = {
    key: "yourKeyHere",
    tenantId: 123,
    domain: ""

Using an invalid domain causes the cookie to silently fail to write and that prevents CDP from tracking users on the website. In the preceding example, you must replace * with the correct domain.