This document discusses big data, data science, and career opportunities in these growing fields. It notes that data science involves using large datasets and tools like machine learning and predictive analytics. Popular technologies include Hadoop, Spark, Java, Python and R. Careers in back-end roles like systems administration and front-end roles like data scientist and analyst are increasing. Skills in areas like Linux, Hadoop, databases, Python and R are in demand. The document provides an overview of applications, industries and references for further information.