SAP HCI is developed as Integration System-as-a-Service (PAAS) which really helps to combine a number of independent methods/purposes for a business method. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI provides Adapters (Connectivity choices) such as: Cleaning soap Adapter, IDoc, HTTP, Mail, https://s4hanacloudtrial92468.verybigblog.com/27816960/hana-cloud-integration