AWS Certified Solutions Architect – Associate (SAA-C02) — Question 717

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 access all 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 storing long-term, infrequently accessed logs while supporting concurrent read access for reporting tools. Amazon EBS and Amazon EC2 instance stores are block-level storage options that do not allow multi-instance concurrent access to the same files. Amazon EFS supports concurrent access but is significantly more expensive than Amazon S3 for long-term retention.