Under the AWS Shared Responsibility Model for Amazon DynamoDB, which of the following is a customer responsibility?

The AWS Shared Responsibility Model dictates that AWS is responsible for the "security of the cloud," and the customer is responsible for "security in the cloud." For Amazon DynamoDB, this means AWS manages the underlying infrastructure, including physical security of hardware and data centers, patching the DynamoDB service itself, and encrypting data at rest by default. The customer's responsibility includes managing access controls (e.g., IAM policies) to their DynamoDB tables, ensuring only authorized users and services can access their data.