Microsoft Dynamics AX 2012 includes many different ways to import data into the system. This document provides guidance about which import method to choose for the specific situations.
This is a very interesting read. As it makes mention of RapidStart.
For one, the partner has to register with RapidStart. Once registered you link a customer with a Voice account.
Then you configure and activate your services. There is an installation component require
You can set up templates to be used for upload and managed by RapidStart.
Links:
Partner source information
Online help on RapidStart
http://technet.microsoft.com/en-us/library/hh429439.aspx
RapidStart login