SAP HCI is created as Integration Platform-as-a-Support (PAAS) which helps you to integrate numerous independent methods/applications for a company process. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI presents Adapters (Connectivity selections) for instance: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4-hana-cloud-tutorial14691.bcbloggers.com/27794391/hana-cloud-integration