SAP S/4HANA system runs on Linux operating system that can be deployed locally or in the cloud. In order to migrate any ERP applications to SAP S/4HANA , those organizations who are using any other operating system, not only they need to migrate their legacy ERP application to SAP S/4HANA but also need to change their operating system to Linux. In addition to that, some of the organizations may face some challenges while migrating to SAP S/4HANA system if they have customizations in their legacy ERP system because SAP S/4HANA might not be compatible with the new products.