The document provides an introduction to Apache Spark, Hive on Tez, and Presto on Amazon EMR. It discusses how to build data lakes using Amazon S3 for storage and Amazon EMR for processing. It also covers running jobs on EMR clusters, security options, and two customer use cases - one by FINRA that saved 60% costs by moving to HBase on EMR, and one by Netflix that uses Presto on EMR for a 25PB dataset in S3.