Clean Core Architecture in SAP S/4HANA: A Practical Guide to Upgrade-Safe ERP
Ask almost any SAP team about their last upgrade and you’ll probably get a sigh. Years of custom ABAP programs, modified standard objects, and workarounds nobody dares touch turn every new release into a regression-testing marathon. With SAP ECC’s 2027 mainstream maintenance deadline getting closer, that legacy is more than an annoyance. It’s a business …
