This document discusses big data and its growing role in customer engagement. It notes that while there was 5 exabytes of data created from the dawn of civilization through 2003, that amount is now created every two days. It outlines different types of structured and unstructured data companies are dealing with. It provides examples of how companies like UPS and Aurora Health Care have saved millions annually through analyzing big data. It also states that companies with a big data strategy financially outperform their peers by 20% and that big data will increasingly be important for personalized customer communication and prescriptive analytics.