We have shown on this article several advanced techniques to
get BizTalk and SharePoint Services connected. As you can see, most of the bulk
of the work involved properly configuring the environment and not so much on
the coding side. Thanks to Microsoft, the bulk of the work is being done for us
in the background. BizTalk provides a good solid foundation for an ESB
architecture in which it will be the mediator between external services and
internal resources. We have shown that we can use BizTalk in the middle layer
to provide for some business rules.