In DynamoDB, which of the following allows you to set alarms when you reach a specified threshold for a metric?

Explanations:

“Alarm Signal” is not a recognized feature or service in AWS. It does not relate to setting alarms or thresholds in DynamoDB.

“DynamoDB Analyzer” is not an official AWS service or feature. There is no specific service by this name that allows setting alarms for metrics in DynamoDB.

“CloudWatch” is an AWS service that monitors resources and applications in real-time. It allows you to set alarms based on specified thresholds for metrics, including those from DynamoDB, enabling proactive resource management.

“DynamoDBALARM” is not a valid term or feature in AWS. The correct service to set alarms based on DynamoDB metrics is CloudWatch.