The AWS Bills page provides details to help you understand how the charges on your invoice were calculated. You can view your charges by service, AWS Region, or member account, and view pricing and usage details to understand how each line item was calculated. You charge data is organized into tabs to provide views of charges by service, charges by account, taxes, and savings. You can also download invoices and supplemental documents for accounts payable, compliance, or tax purposes. The Bills page provides a “cash” view of your charges – it reflects the actual amount that you pay to AWS each month, inclusive of discounts, credits, refunds, and taxes. In contrast, services like Cost Explorer allow you to view an amortized view of your costs, in which upfront charges such as upfront Savings Plans are spread or “amortized” over the term of the commitment (one year or three years). To learn more, see Exploring your data using Cost Explorer.