Explanation:
The correct answer is A. Amazon DynamoDB. DynamoDB is a fast and flexible NoSQL database service that provides consistent single-digit millisecond latency for data retrieval. It is well-suited for applications that require high-performance data retrieval. In this scenario, the metadata about the files can be stored in a DynamoDB table with a primary key based on the metadata attributes. This would enable the organization to quickly query and retrieve metadata about the files in real-time, allowing users to efficiently browse metadata and select files for download.
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Which AWS service is best suited for indexing and retrieving metadata of files stored in Amazon S3 with single-digit millisecond latency for a web application?
A
Amazon DynamoDB, a NoSQL database service offering high-performance data retrieval with consistent single-digit millisecond latency, suitable for indexing file metadata.
B
Amazon EC2, a scalable computing service that does not provide the required latency for data retrieval.
C
AWS Lambda, a compute service that automatically manages compute resources but is not designed for high-speed data retrieval.
D
Amazon RDS, a relational database service that automates database administration but does not meet the latency requirements for this scenario.
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