Cost Explorer : See patterns in AWS spend over time, project future costs, identify areas that need further inquiry, observe Reserved Instance utilization, observe Reserved Instance coverage, and receive Reserved Instance recommendations.
AWS Trusted Advisor – Get real-time identification of potential areas for optimization.
AWS Budgets – Set custom budgets that trigger alerts when cost or usage exceed a budgeted amount. Budgets can be set based on tags and accounts as well as resource types.
Amazon CloudWatch – Collect and track metrics, monitor log files, set alarms, and automatically react to changes in AWS resources.
AWS CloudTrail – Log, continuously monitor, and retain account activity related to actions across AWS infrastructure at low cost.
Amazon S3 Analytics – Automated analysis and visualization of Amazon S3 storage patterns to help you decide when to shift data to a different storage class.
Cost Optimization Monitor – Automatically process detailed billing reports to get granular metrics that can be searched, analyzed, and visualized in a customizable dashboard.
EC2 Right Sizing – Analyze EC2 instance utilization data and receive reporting recommendations for right sizing EC2 instances. The tool recommends instances that better match your usage.
AWS Cost and Usage Report – Granular raw data files detailing your hourly AWS usage across accounts used for Do-It-Yourself (DIY) analysis (e.g., determining which S3 bucket is driving data transfer spend). The AWS Cost and Usage Report has dynamic columns that populate depending on the services you use.
Detailed Billing Report – This report is similar to the AWS Cost and Usage Report, but it has static columns. This report is eventually deprecated.Please use the AWS Cost and Usage Report instead.