DIFFRENCES IN ARCHITECTURE SAP BODS 3.2 AND 4.0 DIFFRENCES

The new features also indicates the differences in the architecture. For example from the same guide:
·         The new Security relies on the CMS, therefore the BI platform of IPS (Information platform services) is required (an additional part in the new architecture of DS4.0)
·     ·         These are the   BI platform services that come with the Information platform services and are new
:

• CMS
• Adaptive Processing Server (APS) aka Program Job Server (PJS)
• Adaptive Job Server
• Input File Repository and Output File Repository

Also DS4.0 is 64-bit based only.
So the main differences in the architecture  the introduction and the reliance on the BI platform.

Here is on overview Form the Admin guide of DS4.0: