I was working on a small POC which consumes a WCF Service to update DAX 2009 Employee data.
This WCF Service in-turn consumes a legacy ASMX Service to talk to a different application and loads the data from that webservice. And, later the data is updated to DAX 2009.
These are the 2 steps:
Step A: Windows Mobile Loads the data from a WCF Service which in turn invokes the Business Logic Layer which calls the Data Access Layer (this layer consumes the legacy asmx webservice of the external app)
STEP B: Updates Data to AX 2009