This document discusses Amazon DynamoDB, a fully managed NoSQL database service from AWS. It provides three key points: 1. DynamoDB offers fast and predictable performance with single-digit millisecond latency, automatic scaling of storage and throughput capacity, and built-in security, backup and disaster recovery capabilities. 2. DynamoDB uses a flexible data model with key-value and document data structures, and supports both document and relational data structures. It also includes rich query capabilities and SDKs/APIs for developers. 3. The document provides an example of modeling user data and files for a media catalog application using DynamoDB tables and secondary indexes to support various access patterns like searching by