Amazon Web Services (AWS) bills your account for usage, which ensures that you pay only for what you use. To help you manage your charges, AWS provides features that let you monitor your costs and pay your bill.

User Guide
Describes how to use the AWS Billing and Cost Management console, which is integrated with the AWS Management Console.
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  API Reference
Describes all the API operations for AWS Billing and Cost Management in detail. Also provides sample requests, responses, and errors for the supported web services protocols.