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Where can a customer go to get more detail about Amazon Elastic Compute Cloud (Amazon EC2) billing activity that took place 3 months ago?
A
Amazon EC2 dashboard
B
AWS Cost and Usage reports
C
AWS Trusted Advisor dashboard
D
AWS Cloud Trail logs stored in Amazon S3
Explanation:
AWS Cost and Usage Reports (also known as AWS Cost Explorer) is the correct service for viewing detailed billing activity that occurred 3 months ago. Here's why:
AWS Cost Explorer provides access to up to 13 months of historical cost and usage data
It allows customers to analyze their AWS spending patterns over time
For Amazon EC2 specifically, it shows detailed billing information including instance types, regions, and usage patterns
Why the other options are incorrect:
A. Amazon EC2 dashboard: This shows operational metrics and instance status, not detailed billing history
C. AWS Trusted Advisor dashboard: This provides cost optimization recommendations and best practices, but not detailed historical billing data
D. AWS CloudTrail logs: These contain API activity logs for security and compliance purposes, not billing information
As mentioned in the AWS documentation, Cost Explorer is a free tool that allows viewing cost data for up to the last 13 months, making it perfect for analyzing billing activity from 3 months ago.