Which AWS service is fully managed and can automatically scale throughput capacity to meet database workload demands?

Explanations:

Amazon Redshift is a fully managed data warehouse service designed for analytics, not a NoSQL database. It does not automatically scale throughput for NoSQL workloads.

Amazon Aurora is a relational database service that offers automated scaling for relational databases, but it is not a NoSQL database.

Amazon DynamoDB is a fully managed NoSQL database service that automatically scales throughput capacity based on workload demands, making it ideal for variable workloads.

Amazon RDS (Relational Database Service) is a managed service for relational databases. It does not provide the automatic scaling and NoSQL capabilities that DynamoDB offers.