What ABAP stands for
ABAP stands for Advanced Business Application Programming. It is the programming language created by SAP for building business applications inside SAP systems, and it has been part of the SAP world for decades.
Unlike general-purpose languages, ABAP is designed specifically around business data: customers, orders, invoices, materials and employees. That focus is what makes it so powerful inside an enterprise system.
Where ABAP runs
ABAP runs on the SAP application server, inside systems such as SAP ECC and SAP S/4HANA. Every report, interface, form and enhancement you see in a classic SAP system was written by an ABAP developer.
Because the language lives inside the system, ABAP code has direct access to business data through the Data Dictionary and Open SQL, without needing separate database drivers or connection layers.
What you can build with ABAP
ABAP developers build reports that turn raw data into business insight, interfaces that move data between systems, enhancements that adapt standard SAP behaviour, and forms that produce business documents.
In modern S/4HANA systems, the same language also powers CDS views, OData services and the RAP programming model — so learning ABAP opens the door to both classic and modern SAP development.
Why learn ABAP first
ABAP is the foundation on which almost every other SAP development skill is built. Once you understand internal tables, modularization and the Data Dictionary, topics like ABAP on HANA and SAP RAP become much easier to absorb.