C. Amazon DynamoDB
Amazon DynamoDB is a fully managed, highly scalable key-value database service that delivers consistent single-digit millisecond performance at any scale. It allows you to store and retrieve any amount of data, and serves any level of request traffic. DynamoDB automatically spreads the data and traffic for a table over a sufficient number of servers to handle the request capacity specified by the customer and the amount of data stored, while maintaining consistent and fast performance.
Amazon RDS, Amazon Aurora, and Amazon Redshift are also AWS services but they are not key-value database services, they are relational database services, a postgres-compatible relational database service, and a data warehousing service respectively.
Amazon DynamoDB is a fully managed, serverless, NoSQL database service provided by AWS. It is a key-value and document database that offers consistent single-digit millisecond latency at any scale, making it a great choice for applications that require low-latency access to data, regardless of the amount of data being stored or the request rate. DynamoDB provides seamless scalability and automatic replication across multiple Availability Zones to ensure high availability and durability.
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