Hi Jelena,
from my understanding, the goal of SAP is to get rid of batch input. To achieve this it is necessary to to make the external data input via OData (first choice) or SOA services. These two options are available for onPrem and the Cloud deployment. For the onPrem deployment two further options are possible/available namely RFC and BAPI.
This goal is by far not achieved. So for an onPrem deployment batch input is usually available as not every data input is covered by OData services.
For cloud deployments batch input (as automated processing of UIs) is not available simply due to the deployment option and its consequences.
BR
Christian