Employee Central Payroll vs. On Premise Payroll

Hi Folks,

Hope someone can help me address the question below....

This client is moving to the Cloud with Employee Central and Talent Management, and will like to have payroll in SAP.

If this client already has SAP Finance implemented, and could potentially implement SAP Logistics processes in the future, what will be the advantages and disadvantages for opting for Employee Central Payroll vs SAP On-Premise Payroll ?

For example, how will the Integration with other SAP modules like CRM, FI, MM, Purchasing work if we opt to implement EC Payroll ? Will we have to send a minimaster of employees to the SAP ERP on premise FI system ? In this case employees will be in 3 places (EC Payroll, EC and on SAP on premise).

How about licenses ? Will it be more cost effective to have EC Payroll as opposed to having SAP on premise payroll ?

Thanks.

Javier