SAP HCI is made as Integration System-as-a-Provider (PAAS) which helps you to integrate multiple unbiased devices/programs for a business process. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI offers Adapters (Connectivity options) for example: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oDa