What is difference between r3/r4 architecture? Please Explain briefly

hi,
   am stefen.

Hello Stefen,
for 4.0 http://trustedbi.com/2010/11/12/businessobjects-v40-architecture/
for 3.x Business Objects Architecture diagram | Business Objects Topics
http://wiki.scn.sap.com/wiki/display/BOBJ/Business+Objects+XI+3.1+Enterprise+Architecture
Read the below links...
Regards
Subbarao M

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