Develop an app to sync appointments between SAP C4C and Outlook using SAP HCP

Hello,

For a customer, we have to develop a Java application that will run on HCP to synchronize appointments between SAP C4C and MS Outlook bidirectional.

I am quite new in HCP. So I don't know where to start.

I have two major questions:

-Do I have to create a cloud connector for any part of the application?

-How could I enable the synchronization?

Thank you very much in advance. Any input is much appreciated.