SAP HCI is created as Integration System-as-a-Support (PAAS) which helps to combine multiple impartial systems/apps for a company approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI features Adapters (Connectivity options) which include: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData.