Homogeneous option for DMO (with system move)
DMO used to be heterogeneous (change of DB). Now you can use DMO with system move (also on-prem to target on-prem) to migrate and convert ECC on HANA to S/4 or just update/upgrade S/4 and move it to another location like other DC or other instance in one step.
DMOVE2S4 aka “DMO move to SAP S/4HANA (on hyperscaler)”
The DMOVE2S4 is just to move and convert to the "cloud" in one step. This includes also anyDB source systems and downtime-optimization techniques (doDMO and doC). SAP illustrates it as cloud but, you can also use another DC or another hoster.
=> Due to the fact that the R3load pipeline mode is used this option is faster compared to the "normal" DMO system move approach.