From what I can tell, the way that they've integrated analytics, with e-commerce analytics, the entire service is a direct tie-in to adwords. Google Analytics

From what I can tell, the way that they've integrated analytics, with e-commerce analytics, the entire service is a direct tie-in to adwords. Google Analytics is such a complete tool, when integrated with adwords and the power of google search, anyone who doesn't have full-time to dedicate to managing paid search and add networks could just easily integrate into the google walled garden and free up a good portion of their day to do other stuff.