Definition : 

SAP introduces the term LSA – Layered, Scalable Architecture in order to describe the design of service-level oriented, scalable, best practice BW
architectures founded on accepted EDW principles*. EDW = Enterprise Data Warehouse The LSA serves as a reference architecture
to design transparent, complete, comprehensive customer DWH architectures (Customer LSA). The Customer LSA describes corporate standards
to build BI applications in a performant, maintainable, flexible manner.

Main difference between LSA and LSA ++ is about the usage of DSO instead Infocube on the multiprovider because infocube will dispear with Hana.

 

 

After several months of LSA methodology usage on WBP system for any new project or important maintenance developments, we can sum-up the methodology for WBP with following level :

Level 0 : Acquisition layer = PSA

Level 1 : Harmonisation layer = infosource (not often used and 98 % of dev are done with acqusition layer PSA to Propagation layer = DSO)

Level 2 : Propagation layer = DSO and nothing are done on the transformation between Datasource and this DSO (1 to 1 and no business transformation rules) because it could be the source for several project

Level 3 : Business Transformation layer = DSO or several level of DSO if the transformation are complex

Level 4 : Reporting layer = Infocube (still used on LSA and no more with Hana) and because on WBP the system is linked with BWA server

Level 5 : Virtual layer = multiprovider and in this level only the core queries are build except the jump queries based on the DSO done on the level 3 (Business Transformation layer) with Hana the usage of CompositeProvider.

Level 6 : Open Hub Destination, in this level all open hub destination linked with infocubes, DSO or queries based related to the infoarea will be stored.

+ Please make the folder (for new project) on Solvay infoarea as below :


 

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