SAP HCI is developed as Integration Platform-as-a-Assistance (PAAS) which helps to combine several unbiased techniques/purposes for a business system. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI delivers Adapters (Connectivity choices) for instance: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData