SAP HCI is built as Integration System-as-a-Assistance (PAAS) which helps you to combine many independent systems/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 provides Adapters (Connectivity options) which include: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oD