Integration context between SuccessFactors EC and SAP Cloud Identity Services - IAS

[elsarmientos]

Hi, need your expertise 

1. Are SAP Cloud Identity Services and SuccessFactors in reside in separate cloud?
2. How IAS and SuccessFactors communicate?
   1. Are there any APIs or is it an internal service?
   2. Requirements to integrate?
3. Where can I read the High-level architecture diagram of integration between SF and SAP Cloud Identity Services.

[JF]

you can read about Cloud identity service in the guide What Are Cloud Identity Services? | SAP Help Portal

There is a high-level graphic on section What are the Could Identity Services

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