This document discusses big data and its applications in various industries. It begins by defining big data and its key characteristics of volume, velocity, variety and veracity. It then discusses how big data can be used for log analytics, fraud detection, social media analysis, risk modeling and other applications. The document also outlines some of the major challenges faced in the banking and financial services industry, including increasing competition, regulatory pressures, security issues, and adapting to digital shifts. It concludes by noting how big data analytics can help eCommerce businesses make fact-based, quantitative decisions to gain competitive advantages and optimize goals.