SAP HCI is made as Integration System-as-a-Support (PAAS) which really helps to integrate multiple impartial units/apps for a company approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI offers Adapters (Connectivity possibilities) like: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData.