Transitioning from SAP ECC to SAP S/4HANA is often discussed as a technical upgrade and there is a tendency to oversimplify the planning process and detailed execution tasks to successfully migrate to the new solution. The intent of this document is to highlight the key focus areas to mitigate project risks and provide a framework to guide the project team.
There are two major phases: Preparation and Realization; however, we also refer to the phases as pre-SUM, SUM, and post SUM where SUM stands for Software Update Manager.