The document discusses using Hadoop as a data hub. It describes how a data hub allows organizations to source data once and reuse it many times, eliminating the need for complex and costly ETL processes. Key benefits of a Hadoop data hub include making all data available with low latency, empowering business users with self-service access, and reducing IT costs through a "source once, reuse many times" approach. The document also provides an overview of how Sears has implemented a Hadoop data hub to modernize their legacy systems and analytics capabilities.