In many organizations that is going into the maturity stage of BI, there will be additional service offerings brought into the business and as the technology evolves. Many already embarked on Business Object 4.1 as their BI frontend reporting tool and SAP BW as their datawareouse. When the needs of Data Services and Information Steward arises for the purpose of data profiling and cleansing, the existing landscape has to be scalable to ensure that there is always the first emphasize made on single source of truth for reporting and this is very much refer to data structure and master data. Below is an example of the architecture landscape proposed on the aforementioned.
Please also note that the BO 4.1, DS and IS servers share the same server but with own repository and services. Architecturally, IS and DS are inseparable in that IS relies on DS. In addition, they have a lot in common as well, they both leverage Information Platform Services (IPS). Information Steward and Data Services both rely on CMS services for centralized user and group management, security, administrative housekeeping, RFC Server hosting and services for integrating with other SAP BusinessObjects software (i.e. BI Launch Pad).
For more information:
http://scn.sap.com/community/information-steward/blog?start=0
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