How SAP ABAP Works Inside SAP S/4HANA: A Technical Deep Dive

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2026-05-29 07:11:28 -

The Architecture Shift: From R/3 to S/4HANA For many years, SAP followed a three-tier architecture with presentation, application, and database layers where the choice of database did not matter at all, Oracle, DB2, SQL Server, or MaxDB would suffice under the ABAP application server. In contrast, SAP S/4HANA deliberately breaks such abstraction. Only SAP HANA can be used as a database, and...

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