Cross domain tracking and sub domain tracking with Google Analytics is actually lot easier than you think. The trick is to use Google Analytics with Google Tag Manager and it can be as simple as 1, 2, 3.

Like me, you probably already have Google Analytics installed on your website as well.  But, do we have Google Analytics Goals conversion tracking set up? - probably not.

Deciding what metrics to track is the first part of the process, now we need to figure out what website analytics tools are needed to get the job done.