SAP HCI is intended as Integration System-as-a-Services (PAAS) which really helps to combine several impartial systems/programs for a company process. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI presents Adapters (Connectivity choices) for example: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4hanacloudportal25816.blogozz.com/27853711/hana-cloud-integration