Using AWS Budgets to manage costs - AWS CloudTrail
Creating user-defined cost allocation tags for CloudTrail Lake event data stores

Using AWS Budgets to manage costs

AWS Budgets a feature of AWS Billing and Cost Management, allows you to set custom budgets that alert you when your costs or usage exceed (or are forecasted to exceed) your budgeted amount.

Creating a budget for CloudTrail by using AWS Budgets is a recommended best practice, and can help you track your CloudTrail spending. Cost-based budgets help promote awareness of how much you might be billed for your CloudTrail use. Budget alerts notify you when your bill reaches a threshold that you define. When you receive a budget alert, you can make changes before the end of the billing cycle to manage your costs.

Note

Though you can apply tags to CloudTrail trails, AWS Billing cannot currently use tags applied to trails for cost allocation. Cost Explorer can show costs for CloudTrail Lake event data stores and for the CloudTrail service as a whole.

To get started with AWS Budgets, open AWS Billing and Cost Management, and then choose Budgets in the left navigation bar. We recommend configuring budget alerts as you create a budget to track CloudTrail spending. For more information about how to use AWS Budgets, see Managing your costs with AWS Budgets and Best practices for AWS Budgets.

Creating user-defined cost allocation tags for CloudTrail Lake event data stores

You can create user-defined cost allocation tags to track the query and ingestion costs for your CloudTrail Lake event data stores. A user-defined cost allocation tag is a key-value pair that you can associate with an event data store. After you activate cost allocation tags, AWS uses the tags to organize your resource costs on your cost allocation report.

For more information about activating tags, see Activating user-defined cost allocation tags.