Submitting Documents Via the IInterchange Interface
Documents targeted for BizTalk Server must be transmitted to the server in some way. The appropriate submission method depends on the architecture of the source application and the requirements of the overall business process. You may choose from any of the following delivery protocols:
HTTP—Hypertext Transport Protocol
MSMQ—Microsoft Messaging Queue
SMTP—Simple Mail Transfer Protocol
COM/DCOM—Direct submissions via the Component Object Model or Distributed Component Object Model
With the exception of using COM/DCOM, the preceding approaches do not directly initiate BizTalk Server processing; they simply provide a means of transportation for messages. ...