ABAP (Advanced Business Application Programming) is SAP's own language - tailored to handle large volumes of business data and to build complex ERP solutions. It has existed since the 1980s and remains at the heart of many SAP systems, from the classic R/3 to modern SAP S/4HANA.

What makes ABAP unique is its deep integration with SAP's platform. It is used to create everything from reports and forms to business logic and APIs. With the introduction of SAP BTP (Business Technology Platform), ABAP has also moved into the cloud, enabling modern development approaches and CI/CD processes.

So if you work with SAP and want full control over business processes - ABAP is your best friend. It may not be the most glamorous language, but it is reliable, powerful and indispensable in the SAP world.