SAP HCI is built as Integration System-as-a-Services (PAAS) which helps you to integrate a number of unbiased units/purposes for a company procedure. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI provides Adapters (Connectivity alternatives) for example: Cleaning soap Adapter, IDoc, HTTP, Mail, https://knoxlfaum.boyblogguide.com/27712221/hana-cloud-integration