AWS Purchase Order Management gives you the ability to define and manage your purchase orders (POs) for AWS services in a way that meets your unique business needs. You can configure multiple POs and define the rules of how they map to your invoices through PO line item configurations. You can define separate POs for different time periods, invoices, and AWS seller entities. You can also track the status as well as balance of your POs, and configure email contacts to receive PO balance tracking and expiration notifications. You have complete control to update your PO configuration at any time.
Learn more about AWS Purchase Order Management here, or reference the Managing your Purchase Orders user guide.