AWS Certified Cloud Practitioner — Question 930

A global company is building a simple time-tracking mobile app. The app needs to operate globally and must store collected data in a database. Data must be accessible from the AWS Region that is closest to the user.
What should the company do to meet these data storage requirements with the LEAST amount of operational overhead?

Answer options

• A. Use Amazon EC2 in multiple Regions to host separate databases
• B. Use Amazon RDS cross-Region replication
• C. Use Amazon DynamoDB global tables
• D. Use AWS Database Migration Service (AWS DMS)

Correct answer: C

Explanation

Amazon DynamoDB global tables provide a fully managed, multi-Region, and multi-active database solution that automatically replicates data across selected AWS Regions, ensuring low-latency access for global users with minimal operational overhead. Hosting databases on Amazon EC2 or setting up Amazon RDS cross-Region replication requires significantly more management, maintenance, and configuration effort. AWS Database Migration Service is designed for migrating databases to AWS rather than serving as a continuous, low-latency global storage solution.