SAP HCI is intended as Integration System-as-a-Service (PAAS) which helps to integrate a number of unbiased systems/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. https://s4hanacloudonboarding47024.creacionblog.com/28024407/hana-cloud-integration