My system is a web-based printing system that needs to connect to Amazon to pull down orders (with shipping details, order details etc) into the system. We have multiple clients and currently use something similar, in which we are given a developer key by another company to connect.
We would like our own developer key, but don't know where to start. We don't need an app, just a simple connection that will pull down shipping and order details. Any ideas where to start and which Amazon programmes/docs I need to do this via.