Introducing the SAP S/4HANA Cloud Extensibility Model

The SAP S/4HANA Cloud extensibility model is anchored around the following three principles:

• Extensions can only be implemented internally within SAP S/4HANA Cloud as on-stack extensions or externally as side-by-side extensions running on SAP BTP.
• Extensions can only use released local or remote public SAP Application Programing Interfaces (APIs) and BAdIs as well as ABAP RESTful Application Programming Model Business Object extension points.
• Extensions can only be implemented using cloud enabled and released technologies.

Chief amongst the principles of the SAP S/4HANA Cloud extensibility model are the extension types. There are three extension patterns contained in two categories, as follows:

• On-stack extensions, which consist of two distinct types:
  • Key User Extensions (Type 1)
  • Developer Extensions (Type 2)
• Side-By-Side Extensions (Type 3)