Which situation we will use Business Service, and Business System?

Hi <b>SAP XI Professionals</b>  ,
Can U plz tell me What is Business Service and Business System? when we need to use Business Service?  what is diff between B.System and B. service?
thank You
with regards
jai

HI,
Please see the below links
Differentiate b/w Technical System, Business System and Business Service
Difference between Business System and Business Service.
Difference between Business System and Business Service in ID
Difference between Business System and Business Service
Business system ans service
How can I create a Service in the Business System?
advantage and diff   btw Business service n business system
Logical system for business service!!!!!!!!!
Regards
Chilla..

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    *REWARD POINTS IF FOUND USEFULL*

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