A gaming company uses a NoSQL store for customer data and is migrating to AWS. They need a fully managed service that supports heavy OLTP traffic, single-digit millisecond latency, and global high availability with minimal operational overhead. Which service satisfies these requirements?
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Correct answer: Amazon DynamoDB.
Why this is the answer
Amazon DynamoDB is the correct choice because it is a fully managed NoSQL database service designed for high-performance OLTP workloads. It consistently delivers single-digit millisecond latency at any scale, offers built-in global tables for multi-region replication and high availability, and requires minimal operational overhead. Amazon Keyspaces (for Apache Cassandra) is also fully managed and offers low latency but is specifically for Cassandra workloads and might not be the best fit if the existing NoSQL store isn't Cassandra-compatible. Amazon DocumentDB is a document database compatible with MongoDB, suitable for document workloads, but DynamoDB generally offers superior performance and scalability for the described OLTP needs. Amazon Timestream is a time-series database, not suitable for general customer data.
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