SAP HCI is built as Integration System-as-a-Assistance (PAAS) which really helps to combine many unbiased devices/apps for a company approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI provides Adapters (Connectivity alternatives) like: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. Some of https://s4-hana-cloud-tutorial14691.wssblogs.com/28311546/hana-cloud-integration