This document discusses big data and AWS tools for managing it. It defines big data as data with high volume, velocity and variety. AWS provides scalable tools like EC2, EMR, Kinesis and Redshift for ingesting, processing and analyzing large and diverse datasets. These tools work together in an integrated environment and auto-scale based on demand, providing a cost-effective solution for big data challenges. An example use case of real-time IoT analytics is presented to illustrate how different AWS products interact for processing sensor data streams.