SAP S/4 HANA On-Premise Edition SAP S/4HANA on-premises is the ERP business suite based on the SAP HANA in-memory database. With on premises, the customer manages everything, including the HANA database, applications, data centers, OS, middleware, servers, virtualization and networking.   SAP S/4 HANA Cloud Edition SAP S/4HANA Cloud is the SaaS version of S/4HANA. SaaS deployment means that users can take advantage of much of on-premises S/4HANA’s functionality without needing the hardware,