In the previous blog we seen about the overview and introduction of SAP BW and R3 Architecture, in this Blog am going to tell about the overview of LSA and LSA++ for SAP BW/HANA. What is LSA & LSA++ ? LSA is Layered Scalable Architecture and helps in designing and implementing various layers in the BW system for data acquisition, data distribution and data analysis. Let's see about the 7 layers. 1) Data A cquisition Layer. 2) Quality (or) Hormonization Layer. 3) Corporate Memory. 4) Propogation Layer. 5) Business transformation Layer. 6) Reporting Layer. 7) Operational Data Store Layer. Fig 1.1.1 If we were to break down the above picture bottom upwards: 1. The ETL/Extractor which brings data from ECC and other sources would be the data acquisition layer. (This would be the 'SLT' & 'CDS View' step in the Native HANA scenario) 2. The BW transformations would be the EDW transformations & propagati