Amazon has added payments to its stable of web services. The Amazon Flexible Payments Service (FPS) gives developers a way to send and receive payments between credit cards, bank or Amazon accounts. In addition to making basic payment transactions, developers can also set up complex payment rules and standing transactions. There no requirements for the developer to set up an account beyond having an AWS login. This will be a welcome change for anyone who has dealt with Authorize.Net. Of course, all of this magic is built on Amazon’s payment system so existing Amazon customers (everybody) can log in and make payments with the information and preferences they already have on file with Amazon.