4.0 Building SAP BW into multi-tier architecture model in Business Services
Being implemented on top of SAP Web Application Services SAP's BW provides a multi-tier architecture (figure shown below), along with a complete software development environment, system management tools and additional functionalities such as currency conversion or security. Although it is closely related to SAP R/3, SAP BW is a completely separate software package which comes with automated extraction and loading facilities.
