AWS Certified Data Engineer – Associate (DEA-C01) — Question 83

A gaming company uses a NoSQL database to store customer information. The company is planning to migrate to AWS.

The company needs a fully managed AWS solution that will handle high online transaction processing (OLTP) workload, provide single-digit millisecond performance, and provide high availability around the world.

Which solution will meet these requirements with the LEAST operational overhead?

Answer options

• A. Amazon Keyspaces (for Apache Cassandra)
• B. Amazon DocumentDB (with MongoDB compatibility)
• C. Amazon DynamoDB
• D. Amazon Timestream

Correct answer: C

Explanation

Amazon DynamoDB is the best fit as it is designed for high OLTP workloads, offers single-digit millisecond performance, and is fully managed with minimal operational overhead. Amazon Keyspaces and Amazon DocumentDB are also NoSQL solutions but may not offer the same level of performance and availability for OLTP use cases as DynamoDB. Amazon Timestream is primarily optimized for time-series data, making it unsuitable for the requirements specified.