Cost Management in the AWS Cloud
AWS Whitepaper

Conclusion

AWS provides a set of cost management tools out of the box to help you manage, monitor, and, ultimately, optimize your costs. To get started, identify someone to set the standard for cloud excellence at your organization, get started using cost management tools, and define and track against a set of cost-related benchmarks for cost optimization. As your cost management capabilities grow, you can begin to use more advanced metrics, set budgets and alerts, and use advanced analytics to identify additional savings opportunities.

To learn more about the tools that AWS provides to help you access, understand, allocate, control, and optimize your AWS costs and usage, see AWS Cost Management.