SAP HCI is built as Integration System-as-a-Services (PAAS) which helps you to integrate a number of impartial units/purposes for a company process. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI offers Adapters (Connectivity choices) including: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://ericknpmea.bloggip.com/28305192/hana-cloud-integration