Are there any best practices about how to implement an EDW with BW?
The Layered Scalable Architecture (LSA) is SAP's reference architecture and best practices how to build an EDW with BW. The LSA was established several years ago already and is based on industry best practices, e.g. the Corporate Information Factory (CIF) from Bill Inmon. Over the years it has evolved and developed into a very well established framework among our customers.
With BW powered by HANA completely new options became available from an LSA perspective with regard to how to implement a BW EDW. The in-memory capabilities of HANA enable BW to expand it's focus to a more open logical architecture with less persistence and even more flexibility and scalability. The LSA++ is the reference architecture for implementing an EDW with BW powered by HANA. With LSA++ for BW on HANA there are huge opportunities developing the BW EDW further into a holistic data framework for consistent BI on the EDW, operational and agile BI.
How does the LSA++ evolve in the context of in-memory computing, S/4HANA etc.?
The founder of the LSA and LSA++ Juergen Haupt shared his thoughts around the future of EDWs and LSA++ during an interview. Read the following blogs that summarize the interview.
With BW 7.4 and 7.5 several simplification options where put in place for BW powered by HANA deployments. How do those impact data modeling best practices and architecture concepts like LSA++?
The new functionalities in BW 7.5 running on HANA one of the main new modeling patterns is called the 'SAP BW on HANA Dynamic Star Schema'. Have a look at the following link that routes you to the landing page for BWoH First Guidance papers where you will also find one specifically covering this new data modeling approach.