AWS Certified Cloud Practitioner (CLF-C02) — Question 62

A company has 5 TB of data stored in Amazon S3. The company plans to occasionally run queries on the data for analysis.
Which AWS service should the company use to run these queries in the MOST cost-effective manner?

Answer options

• A. Amazon Redshift
• B. Amazon Athena
• C. Amazon Kinesis
• D. Amazon RDS

Correct answer: B

Explanation

Amazon Athena is a serverless query service that allows you to analyze data directly in Amazon S3 using standard SQL, making it highly cost-effective for occasional queries. In contrast, Amazon Redshift is a data warehouse solution that incurs higher costs for storage and computing resources, while Amazon Kinesis is designed for real-time data streaming, and Amazon RDS is a managed relational database service that is not optimized for querying data directly from S3.