Amazon DynamoDB provides seamless scalability for applications that necessitate a non-relational database with low latency and high-performance capabilities. It is designed to handle high-velocity, large-scale applications, such as IoT, mobile apps, and gaming. Amazon Aurora is a high-performance relational database, Amazon Redshift is primarily used for data warehousing and analytics, and AWS Lambda is a compute service that lets you run code without provisioning or managing servers.