According to a recent study it was found that the most-visited websites in the US have on an average of  75 technologies in their marketing clouds, delivering anything to a user and only 13% of their IT people say they are "very effective" at managing those technologies. Read more at: http://www.marketingprofs.com/articles/2015/26934/three-threats-lurking-in-your-marketing-cloud-and-how-to-bust-them