Answer: Consolidated billing

**Consolidated billing** is the correct answer because it allows organizations with multiple AWS accounts to combine their usage and benefit from volume pricing discounts across all accounts. **Key benefits of Consolidated billing:** - **Volume pricing discounts**: When multiple accounts are linked under one paying account, AWS combines the usage from all accounts to qualify for volume pricing tiers - **Single bill**: All charges from linked accounts appear on one bill - **Cost allocation**: Easier to track and manage costs across the organization - **No additional cost**: AWS Consolidated billing is provided at no extra charge **Why other options are incorrect:** - **Amazon QuickSight**: A business intelligence service for data visualization, not related to billing or pricing - **AWS Cost Explorer**: A tool for analyzing and visualizing AWS costs, but doesn't enable volume pricing sharing across accounts - **AWS Budgets**: A service for setting custom budgets and receiving alerts, but doesn't provide volume pricing benefits across accounts

Author: Ritesh Yadav