SAP FSM integration to SAP S/4 HANA on premise

Hi.

We have an requirement to integrate SAP S/4 HANA on premise with SAP Field Service Management system. I am looking for some help on below as it was confusing to me :

1. What got to know what we can integrate in two ways : using CPI and Using FSM connector provided by Proaxia.

2. Which is the best way of integrating and any documentation on integration would be very helpful

3. If we opt for integration with FSM connector provided by Proaxia, are not we making any configuration in CPI for connectivity?

4. Getting started guide says, we should not manually create company in FSM admin. But If we do not use FSM connector provided by Proaxia, how can we a company will be automatically created ?

Any help would be greatly appreciable.

Regards

Vijay