I think that if you are not going to be more specific that you wont get much of an answer...
FYI: Prgogress Dynamics is a Progres FW, which is since 10.1A 'feature proof', meaning that it wont get developped further, it wll be maintained though.
And Progress architecture is such a broad area that I can't even think of an answer.
You can read up on dynamics in the documentation on PSDN.
Casper.