SAP HCI is designed as Integration System-as-a-Assistance (PAAS) which really helps to integrate a number of impartial techniques/programs for a business process. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI delivers Adapters (Connectivity alternatives) including: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4hanacloudtrial71479.blogsvila.com/28390023/hana-cloud-integration