AWS – AWS Purchase Order Management is now generally available

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 business needs. You can manage your PO information from your AWS Billing Console, configure multiple POs, and define the rules of how POs map to your AWS invoices. You can also track your PO status and balance, and set up email notifications to proactively validate your POs. 

Read More for the details.