SAP HCI is designed as Integration System-as-a-Services (PAAS) which helps to integrate numerous independent techniques/apps for a business approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI gives Adapters (Connectivity possibilities) for example: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. Several of https://s4hanacloudfaq25791.pointblog.net/hana-cloud-integration-69343917