Setup Connectivity between C4C and HCP application
C4C provided standard OData services which has business entities like Account, Opportunities, Leads, Service Request, and Employee etc. Partners and customer can build extension applications using HANA Cloud Platform (HCP) by consuming these OData services. You need to configure connectivity to consume OData APIs from C4C. Depending on your scenario you can either use Basic or OAuth2.0 authentication for accessing C4C resources from extension solution.