AWS Certified Cloud Practitioner — Question 870

A company wants to query its server logs to gain insights about its customers’ experiences.

Which AWS service will store this data MOST cost-effectively?

Answer options

• A. Amazon Aurora
• B. Amazon Elastic File System (Amazon EFS)
• C. Amazon Elastic Block Store (Amazon EBS)
• D. Amazon S3

Correct answer: D

Explanation

Amazon S3 is the most cost-effective option for storing large volumes of unstructured data like server logs, which can then be queried directly using services like Amazon Athena. Amazon Aurora is a relational database designed for transactional workloads, while Amazon EFS and Amazon EBS are file and block storage services, respectively, all of which are much more expensive and less suited for simple log storage.