How to integrate Microsoft Dynamics AX 2009 with Custom Portal

Hi All,

I am not a Dynamics AX expert but do work with BizTalk server. In past I have integrated Dynamics AX 2009 with BizTalk through AIF. Now I do have requirement to make data available from Dynamics AX 2009 regarding customer accounts to customer's portal so want to know about the alternative approached to make data available from Dynamics AX 2009.

I would appreciate any guidance on this issue.