What characterises the HANA SQL Data Warehouse?

As known from many articles and publications, SAP offers three solutions for data warehousing. The SAP Business Warehouse (BW) was first published in 1997 and has therefore been a constant figure in the SAP Data Warehouse range for more than two decades. With HANA as a database platform, the HANA SQL Data Warehouse approach has been developing since 2015, which initially consisted of loosely coupled tools, but has since evolved into an open, yet highly integrated set of tools and methods, that can also be used to develop large data warehouse systems. Since 2019, the Data Warehouse Cloud has been completing the SAP solution as a SaaS solution. These three approaches are not in competition.