This document provides an overview of key concepts related to big data and data analytics. It discusses what big data is in terms of volume, velocity, and variety. Examples of big data sources and amounts of data from companies like Google, Facebook, and Twitter are provided. Architectures for processing big data using Hadoop and MapReduce are described. Different types of business analytics including descriptive, predictive, and prescriptive analytics are summarized. Research areas involving big data analytics are outlined. Finally, references on big data and analytics are listed.