SAP-C02 Question 550
Single answerA company is deploying a highly dynamic web application on AWS. The application requires low-latency access to frequently changing data that will be shared across multiple Availability Zones (AZs). The data must be stored durably and be highly available, with the ability to support atomic operations and fine-grained permissions. Which AWS service should the company use to meet these requirements?
- A
Amazon S3
- B
Amazon RDS - MySQL
- C
Amazon DynamoDB
- D
Amazon ElastiCache
Show answer and explanation
Correct answer: C
Explanation
Amazon DynamoDB meets all the requirements for the scenario: it provides low-latency access to data, supports atomic operations, offers high availability across multiple AZs, ensures durability, and allows fine-grained access control using IAM policies. Other services like Amazon S3 and Amazon RDS do not provide the required combination of low-latency and flexibility, while ElastiCache is designed for caching use cases rather than durable data storage.
- A. Incorrect.
Amazon S3 is designed for storing objects, but it is not optimized for low-latency access to frequently changing data or atomic operations. It is not suitable for this scenario.
- B. Incorrect.
Amazon RDS - MySQL provides relational database capabilities but lacks the low-latency performance required for highly dynamic applications. It is also more complex to scale across multiple AZs compared to DynamoDB.
- C. Correct.
Amazon DynamoDB is a fully managed NoSQL database service that supports low-latency access, durability, high availability across multiple AZs, and atomic operations. It is the most appropriate choice for this use case.
- D. Incorrect.
Amazon ElastiCache is a caching solution optimized for low-latency retrieval of data from in-memory stores. However, it is not ideal for storing data durably and does not natively support fine-grained permissions.