SAP S/4HANA is SAP's ERP suite redesigned over the SAP HANA System. Most SAP consultants that I speak to typically have heard of HANA or S/4HANA. But there is much of selling jargon behind this, it is sometimes perplexing to put your finger firmly on what HANA or S/4HANA is https://sapsupplychain16047.blogocial.com/the-smart-trick-of-s-4hana-that-no-one-is-discussing-69828009