SAP HCI is developed as Integration System-as-a-Service (PAAS) which helps to integrate a number of unbiased units/applications for a business method. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI presents Adapters (Connectivity solutions) such as: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData.