In this example I'm going to use the File system adapter to exchange data between BizTalk and Microsoft Dynamics AX. The best practice is to use the AIF BizTalk Adapter but for testing purposes it's easier (and faster) to use the File system or the Message Queuing adapter. You have to do some extra steps however because the Application Integration Framework (AIF) expects an envelope around every document. The AIF BizTalk Adapter does this automatically but when you use the File system or the Message Queuing adapter, you have to use an custom Pipeline.