SAP HCI is made as Integration Platform-as-a-Assistance (PAAS) which really helps to integrate a number of impartial techniques/applications for a company process. HCI can perform 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, https://s4hanacloudportal13579.dailyhitblog.com/33570779/hana-cloud-integration