According to the AWS shared responsibility model, which task is the customer’s responsibility?

Explanations:

AWS is responsible for maintaining the infrastructure that runs AWS Lambda, including the underlying servers, storage, and networking.

Amazon DynamoDB is a fully managed NoSQL database service, and AWS handles all updates, including the operating system and underlying infrastructure.

Amazon S3 is a managed service, and AWS is responsible for maintaining its infrastructure, including the servers and storage systems used for S3.

As a customer, you are responsible for managing and updating the guest operating system on Amazon EC2 instances, including applying security patches and updates.