If your website contains a small number of static HTML pages, it is very likely that this chapter will not apply to you. However, if you have a dynamic website that crosses multiple domains and subdomains, this chapter will offer valuable information about how, and why, you should configure Google Analytics.
Google Analytics can track visitors across multiple domains. This functionality is primarily used on websites that have a third-party shopping cart, but you can use this capability for other purposes. If your website traverses multiple domains, you will want to track your visitors as they move from one domain to another. If you do not track them across domains, each visitor will appear as a new visitor each time she moves from one of your websites to another. It will also be difficult to attribute conversions to different marketing activities.
You should implement tracking across multiple domains only if there is some ...