Answer: Consolidating billing

**Consolidated Billing** is the AWS feature that allows you to view and manage billing for multiple AWS accounts from a single paying account. This enables organizations to: - Receive one combined bill for all linked accounts - Track costs across multiple accounts - Take advantage of volume pricing discounts across all accounts - Simplify payment management **Why the other options are incorrect:** - **B. Combined Billing**: This is not an official AWS service name - **C. Cost Explorer**: This is a tool for analyzing and visualizing AWS costs over time, but it doesn't consolidate billing across accounts - **D. IAM**: Identity and Access Management is for managing user permissions and access control, not billing The correct AWS terminology is **Consolidated Billing**, which is part of AWS Organizations and allows you to manage billing for multiple accounts through a single paying account.

Author: Ritesh Yadav