Marketers want to demonstrate return on investment (ROI)Analyticsreturn on investment (ROI). This has been an age-old dilemma for the marketer, tracing advertising costs to sales, for example. It's rarely a solid line from one to the other. Experience analytics within Sitecore, however, offers some serious promises to the marketer seeking to demonstrate ROI, performance, etc. How is this possible? Sitecore logs every interaction from everywhere and tapping into this vastness of data is your key to understanding how your digital experiences are doing.