Why are extensions on top of SAP S/4HANA Cloud NOT affected by the quarterly update...

SAP guarantees thatpublic APIs, CDS views, business events, and OData servicesexposed as “whitelisted” or “released” remainstable and backward compatibleacross quarterly upgrades.

Therefore:

Extensions built on these APIs continue functioning regardless of SAP internal changes.

SAP ensures upgrade compatibility through semantic versioning and API lifecycle policies.

Side-by-side and in-app extensibility both rely on stable released interfaces.

Thusoption C is the fundamental reasonwhy extensions remain unaffected.

Why the Others Are Incorrect:

A:The VDM may evolve, but stability is guaranteed only forreleased interfaces, not the whole VDM.

B:Running on BTP alone does not guarantee stability—stability comes from SAP’s API contract guarantee.

D:There is no mechanism that “freezes” APIs; SAP maintains them as stable by contract.