Amazon continues to lead the way into a service-driven future with the release of the Amazon Flexible Payments Service:
Amazon Flexible Payments Service (Amazon FPS) is the first payments service designed from the ground up specifically for developers. The set of web services APIs allows the movement of money between any two entities, humans or computers. It is built on top of Amazon’s reliable and scalable payment infrastructure.
FPS supports micro-payments and the fees look very competitive.
Payments are the last piece of the service puzzle and with the release Amazon now has a complete Operating System for services.