This edition of DynamoDB lets you write applications without accessing the actual Amazon DynamoDB web service. Instead, the database is self-contained on your computer.
This local version of DynamoDB can help you save on provisioned throughput, data storage, and data transfer fees. In addition, you do not need to have an Internet connection while you are developing your application. When you are ready to deploy your application in production, you can make some minor changes to your code so that it uses the Amazon DynamoDB web service.