SAP HCI is made as Integration System-as-a-Company (PAAS) which helps to combine various unbiased devices/apps for a company course of action. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI gives Adapters (Connectivity possibilities) for instance: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, https://s4hanacloudfaq36801.tribunablog.com/hana-cloud-integration-42543565