Agile Development Methodologies, ABAP RAP framework, ABAP Core Data Services CDS, Clean Core Cloud Extensibility, SAP ABAP Cloud, OData services V2 V4, asynchronous communication patterns, Behavior Implementations BP, continuous delivery processes, Integration Event Handling, Business Object BO Modeling, external APIs, Fiori Elements, Behavior Definitions BDEF, SAP BTP ABAP Environment Steampunk