SAP CDC Connector and SLT - Part 1 - Overview and architecture

Hi Trond1965
If you want ot extract form SAP systme source ys SLT is mandatory.
"SAP Landscape Transformation Replication Server (SLT) is only required if you want to replicate data from SAP tables with the SAP CDC connector. All other sources work out-of-the-box without SLT."
Reference: https://learn.microsoft.com/en-us/azure/data-factory/sap-change-data-capture-prerequisites-configuration#set-up-the-sap-landscape-transformation-replication-server-optional

But one of the main benefit of SLT is to have the Delta capture changes. If you have low volume of course it won't make much difference to extract in full vs delta.

Lastly, the SLT can also be installed on the same machine as SAP source system to avoid another server. But few choose that option, since a separae machine for replication allows to manage ressources separately form the source system.