SAP HCI is built as Integration Platform-as-a-Assistance (PAAS) which really helps to combine several impartial devices/apps for a business approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI gives Adapters (Connectivity possibilities) for instance: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. Many https://sergiodzung.theisblog.com/28466460/hana-cloud-integration