Answer: Amazon Athena

## Explanation Amazon Athena is the correct AWS service that allows users to use standard SQL to directly query AWS Cost and Usage Report data. ### Key Points: - **Amazon Athena** is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL - AWS Cost and Usage Reports are stored in Amazon S3 buckets - Athena can directly query these reports using SQL without the need to load the data into a database - This enables cost analysis, usage tracking, and financial reporting directly on the billing data ### Why other options are incorrect: - **Amazon Aurora**: A relational database service, not designed for direct querying of Cost and Usage Reports - **Amazon DynamoDB**: A NoSQL database service, not used for querying billing reports - **Amazon CloudWatch**: A monitoring service for AWS resources and applications, not for SQL querying of cost data Amazon Athena provides the serverless, SQL-based querying capability that makes it ideal for analyzing AWS Cost and Usage Report data.

Author: Ritesh Yadav