There are a huge number of AWS customers who use and depend on Amazon DynamoDB for persistent performance for their serverless applications. Amazon DynamoDB has a provisioned capacity model. Customers must set the amount of write and read operations that are required for their application.
The introduction of auto-scaling helps to automate capacity management for tables and indexes on Amazon DynamoDB. When using auto-scaling customers can state upper and lower bands for read and write capacity. After bands have been set by the customer, DynamoDB will work with CloudWatch, another Amazon service, to monitor and modify capacity when appropriate.