AWS Budgets Improves Cross-Account Cost Visibility
Briefly

AWS Budgets now supports Billing View to manage and monitor cross-account cloud costs. Users can create budgets that span multiple member accounts without requiring management-account access, improving security and accuracy. Billing View is an AWS resource identified by an ARN; each account has a primary billing view containing its cost data, while an organization's management account has a consolidated primary view. Custom billing views provide filtered subsets of consolidated data. Budgets can be created from filtered views by cost allocation tags or by specific AWS accounts, enabling application-specific and organization-wide budgeting aligned to team needs.
AWS recently announced that its Budgets service now supports an enhancement in Billing View, a change that enables organizations to better manage and monitor cross-account cloud costs. With this new feature, users can create budgets that span multiple member accounts without requiring access to the management account, which helps streamline budget management while maintaining security best practices.
The underlying mechanism for this feature is the Billing View itself, which is treated as an AWS resource identified by an Amazon Resource Name (ARN). By default, each account has a primary billing view with all its cost data. For organizations, the management account's primary view contains consolidated data for all member accounts. The key to this new feature is the ability to create a custom billing view, which is a filtered subset of this data.
Read at InfoQ
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