Many organizations are migrating their ERP systems to SAP S/4HANA. If you want to know what to consider before you get started you should take a look at the compact white paper “ERP Migration to S/4HANA – A Tactical Roadmap for Success”. It presents a high-level roadmap for migrating your current ERP system to an SAP S/4HANA system. The content is organized from an overview level to details, with self-explanatory schematic graphical information privileged over textual information.
There are three common conversion paths for organizations transitioning to SAP S/4HANA: system conversion, landscape transformation and a new implementation.
The “system conversion” scenario is for customers who want to change their current system into an SAP S/4HANA system. Database, SAP NetWeaver and Application transition in one step.
“Landscape transformation” is the scenario to chose if you want to consolidate several landscapes or carve out selected entities or processes into an existing SAP S/4HANA system.
And finally, if you are looking to migrate a legacy system to SAP S/4HANA you should take a look at the “new implementation” scenario.
For a more detailed look at each of the three paths please see here.