Application Link Enabling (ALE) is a mechanism for the exchange of business data between loosely-coupled R/3 applications built by customers of SAP, the enterprise resource management program.
SAP BAPI (Business Application Programming Interface) is a standard interface to the business object models in SAP products.
IDoc (intermediate document) is a standard data structure used in SAP applications to transfer data to and from SAP system applications and external systems.
RFC is also an abbreviation for Request for Comments.
SAP SQL Anywhere is an embedded RDBMS that makes it possible to develop applications that integrate IoT data with business data and can run outside of traditional data centers.
SAPUI5 is SAP's toolkit for building web applications using HTML5.