Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.
This one came from Paolo Salvatori (a senior PM within the MS Connected Systems Division Team... I know a bit of a mouthful) whom has gotten in touch with his creative side and drawn a picture for all us common folk :) - well done Paolo.
The scenario is - a Request/Response Port is published at the 'front end', goes through BizTalk and the work is done by a backend system that operates via a One-Way Send and BTS gets the response via another One-Way Receive.
The thing I like about Paolo's piece of work is that he shows all the Message Context Properties required to be set by BizTalk for message correlation.Which makes this a Messaging Only Solution and NO Orchestrations required!!!! (how cool)
Click on the image to enlarge......one day I'll get Silverlight Zoom Composer control running for these.... :)