Side-by-side extensibility is the recommended extensibility model for SAP S/4HANA Cloud when building advanced, decoupled, and scalable extensions. It allows developers to build and run applicationsoutsidethe S/4HANA core using SAP BTP services.
Correct Options Explained:
B – Integration with cloud and non-cloud solutions
Side-by-side extensions run on SAP BTP, which includesIntegration Suite,API Management,Event Mesh, and connectivity services.
This enables:
Integration withSAP SaaS systems(SuccessFactors, Ariba, SAP S/4HANA Cloud).
Integration withon-premise systemsvia Cloud Connector.
Communication withthird-party and non-SAP systems.
Thus, B is correct.
C – Uses a complete development platform
SAP BTP provides:
Multiple runtimes (Cloud Foundry, Kyma/Kubernetes, ABAP environment).
Database and storage options (SAP HANA Cloud, document stores).
Security, authorization, and multi-tenancy capabilities.
DevOps support (CI/CD, transport management).
Language runtimes (Java, Node.js, CAP, Python, etc.)
This makes SAP BTP afull development and operations platform, supporting the building and hosting of side-by-side extensions.
D – Support for hybrid scenarios
Side-by-side extensibility supports hybrid architectures by enabling:
Connectivity betweencloud and on-premise systems.
Event-driven integration between systems deployed across different landscapes.
APIs and events from both cloud and on-prem to be consumed and extended.
Thus, D is correct.
Why A is Incorrect:
Side-by-side extensionsdo not run in the same software stackas SAP S/4HANA.
They runoutsidethe S/4HANA core on SAP BTP, ensuring:
Loose coupling
Upgrade stability
Clean core compliance
[References:, SAP S/4HANA Cloud Extensibility Model – Side-by-Side Extensibility, SAP BTP Overview – Integration, Runtime, Hybrid Scenarios, ]