SAP HCI is built as Integration System-as-a-Company (PAAS) which really helps to combine various unbiased devices/apps for a business method. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI features Adapters (Connectivity solutions) which include: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4hanacloudtrial37036.blogsuperapp.com/28655723/hana-cloud-integration