SAP HCI is built as Integration System-as-a-Support (PAAS) which really helps to combine numerous unbiased methods/apps for a business course of action. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI offers Adapters (Connectivity possibilities) such as: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oDa