With the end of mainstream maintenance for SAP ECC approaching, many companies face the same question: how and when should we move to S/4HANA?
The first step is an honest look at where you are. How much of your custom code is actually used? How close are your processes to the standard? Is your data ready to move?
The answers decide the scenario. Greenfield suits companies that want to redesign their processes, brownfield suits those protecting existing investments, and selective data transition sits in between.
Whichever path you choose, a Clean Core approach and an early custom code analysis noticeably cut both project time and risk.