Cloud October 7, 2022 SAP S/4 HANA upgrade and migration to cloud in a single outage window 3 min read - S/4 HANA is more than 5 versions old, and many customers are on S/4 HANA 1610 or S/4 HANA 1709. They need to upgrade to the latest version: S/4 HANA 2021.