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Application layer: The application layer is the core of an R/3 SAP Basis system. This layer communicates in both directions, to the presentation layer and to the database layer. The application programs on the application servers request the required data from the database layer, process it, prepare it for the user and pass it on to the presentation layer. Data that the user enters in the SAP GUI is passed on to the database via the application servers.
The SAP basis requires a separation layer to upstream and downstream IT departments, which is clearly defined. In the direction of the infrastructure, for example, this can be the upper edge of the operating system. This distinction must also be drawn in the direction of application development. Here there are various services offered today by the SAP basis, which are more closely related to application, such as control of background processing, transport or also the automation of certain activities. In principle, it is necessary to examine which tasks can continue to be carried out in the SAP basis due to the requirements and which can be given in expert units.
Infrastructure
In the past, when we deployed SAP environments, we first had to work out a detailed sizing and architecture and pass it on to the procurement team, which then ordered the systems and installed them in the data center. From there, it went on to the network team, the storage team, the operating system team, and the database team. So it was not uncommon for three to six months to pass between the architecture design and the installation of a new SAP system.
The SAP Basis is responsible for the smooth operation of the programmes in the SAP system. It acts as an operating system for R/3 and subsequent releases including S/4HANA. Each operating system provides an environment in which programmes can run, such as MS Office on Microsoft Windows. Likewise, the SAP base system with the NetWeaver and HANA platform offers an environment in which the SAP programmes can run. In this context, the NetWeaver platform itself relies on server operating systems such as Windows and Linux.
"Shortcut for SAP Systems" is a PC application that simplifies or even facilitates many activities in the SAP basis.
In order to solve the challenges, it is necessary to develop a suitable catalogue of criteria to evaluate the feasibility or suitability of certain applications for certain service forms.
SAP Basis is the foundation of any SAP system. You can find a lot of useful information about it on this page: www.sap-corner.de.
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