Answer: AWS DynamoDB

## Explanation AWS DynamoDB is a fully managed NoSQL database service provided by AWS. Here's why the other options are incorrect: - **AWS RDS (Relational Database Service)**: This is a managed relational database service that supports various SQL databases like MySQL, PostgreSQL, Oracle, etc. It's not a NoSQL database. - **AWS Redshift**: This is a fully managed data warehousing service designed for analytical workloads using SQL. It's not a NoSQL database service. - **AWS MongoDB**: While MongoDB is a NoSQL database, AWS does not offer a service specifically called "AWS MongoDB." MongoDB can be run on AWS through EC2 instances or using MongoDB Atlas (which is MongoDB's own managed service), but it's not a native AWS managed NoSQL service. **Key features of AWS DynamoDB:** - Fully managed NoSQL database - Serverless architecture - Automatic scaling - Built-in security and backup features - Supports both document and key-value data models - Provides single-digit millisecond performance at any scale DynamoDB is AWS's flagship NoSQL database service and is widely used for applications that require consistent, low-latency performance at any scale.

Author: Ritesh Yadav