A company hosts a multiplayer gaming app on AWS. The app needs sub-millisecond read latency for frequently accessed data and must support one-time queries on historical data. Which solution meets these requirements with the LEAST operational overhead?

The correct solution leverages DynamoDB with DAX for sub-millisecond read latency on frequently accessed data, as DAX is a fully managed in-memory cache specifically designed for DynamoDB. DynamoDB table export provides a straightforward, managed way to export historical data to S3. Amazon Athena then allows for ad-hoc, one-time queries directly on the S3 data without provisioning servers, minimizing operational overhead. Incorrect options: Amazon RDS does not provide sub-millisecond latency for frequently accessed data out-of-the-box like