SAP HCI is made as Integration System-as-a-Assistance (PAAS) which helps you to integrate numerous unbiased units/apps for a business procedure. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI delivers Adapters (Connectivity alternatives) like: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. A lot