AWS Certified Solutions Architect – Associate (SAA-C03) — Question 245

A company runs an application on a group of Amazon Linux EC2 instances. For compliance reasons, the company must retain all application log files for 7 years. The log files will be analyzed by a reporting tool that must be able to access all the files concurrently.

Which storage solution meets these requirements MOST cost-effectively?

Answer options

• A. Amazon Elastic Block Store (Amazon EBS)
• B. Amazon Elastic File System (Amazon EFS)
• C. Amazon EC2 instance store
• D. Amazon S3

Correct answer: D

Explanation

Amazon S3 is the most cost-effective solution for long-term storage of log files due to its low storage costs and durability. While Amazon EBS and EFS offer different performance features, they are generally more expensive for storing large volumes of data over extended periods. The EC2 instance store is ephemeral and does not meet the requirement for retaining data for 7 years.