SAP HCI is developed as Integration Platform-as-a-Services (PAAS) which really helps to integrate a number of independent programs/purposes for a business course of action. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI presents Adapters (Connectivity choices) for instance: Cleaning soap Adapter, IDoc, https://s4hanacloudsapnotes57914.full-design.com/hana-cloud-integration-70965783