it's all about growth marketing

"Small signs can indicate the appearance of big things" (Zigmond Freud).  How can we implement hard data to effective marketing actions? I began my career as a marketing analyst at Visa. There I analyzed the core data of customer behavior within retail as well as market trends in various industries. Demographic, geographic, business transactions, etc.  Businesses who were clearing their transaction by Visa had benefited tremendously from this service and elevated their business with this valuable information. Today we are analyzing customer behavior throughout his/her journey within Digital assets. His/her preference and Digital geography. We follow him/her around the network, offering him/her our products/services. Using endless technologies - Google analytics, Outbrain, Taboola, and much more. But is it enough? In a world of personalized marketing, is learning the customer preference online is enough?  Is follow customer footprint online is enough