A media company is building a new serverless backend for its mobile application. The application will store user profiles, preferences, and content ratings. This data needs to be highly available globally, support rapid scaling to millions of users, and provide single-digit millisecond latency for reads and writes. The development team prefers a fully managed, schema-less database solution to accommodate evolving data structures. Which AWS database service is MOST suitable for this use case?

Why the other options are wrong

• A. Aurora Serverless v2 is a relational database. While it offers serverless scaling and high availability, it requires a schema and may not provide the same global multi-active replication or single-digit millisecond latency guarantees across regions as DynamoDB Global Tables for this specific use case.
• B. Amazon RDS for MySQL is a relational database, requiring a schema and typically not offering the same level of global multi-active replication, single-digit millisecond latency across regions, or seamless serverless integration as DynamoDB for this scale.
• D. Amazon DocumentDB is a document database, offering schema flexibility. However, it does not inherently provide the same fully managed, multi-region, multi-active replication with single-digit millisecond latency guarantees across regions as DynamoDB Global Tables without significant additional effort.