SAP HCI is designed as Integration Platform-as-a-Provider (PAAS) which really helps to combine several impartial systems/programs for a company method. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI provides Adapters (Connectivity selections) like: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData.