AWS Certified Cloud Practitioner — Question 954

A company wants to review its monthly costs of using Amazon EC2 and Amazon RDS for the past year.
Which AWS service or tool provides this information?

Answer options

• A. AWS Trusted Advisor
• B. Cost Explorer
• C. Amazon Forecast
• D. Amazon CloudWatch

Correct answer: B

Explanation

Cost Explorer is the correct tool because it allows users to visualize, understand, and manage their AWS costs and usage over time, including historical monthly data for services like Amazon EC2 and Amazon RDS. AWS Trusted Advisor provides recommendations for cost optimization but not historical cost reporting, while Amazon CloudWatch is for monitoring system performance and Amazon Forecast is a general machine learning forecasting service.