SAP’s “clean core” strategy sets high-level guardrails that keep the digital core stable while still allowing innovation.
The white-paper “Clean Core for SAP S/4HANA Cloud” and the SAP Activate roadmap list the key guiding principles as
1) creating an organizational setup, technical platform, and transformation method that anchor clean-core thinking (A);
2) embedding clean-core activities throughout the entire value-process chain so that every change or extension is evaluated against the principle (E); and
3) running strict release- and lifecycle-management processes to keep the system aligned with SAP’s upgrade cadence (D).
Regular housekeeping (B) and defining roles in a transformation office (C) are good operational practices, but they are not called out by SAP as core guiding principles.