SAP HCI is designed as Integration Platform-as-a-Assistance (PAAS) which really helps to integrate a number of unbiased systems/programs for a business course of action. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI provides Adapters (Connectivity selections) such as: SOAP Adapter, IDoc, HTTP, https://collinieytm.blogoxo.com/28267686/hana-cloud-integration