SAP HCI is developed as Integration Platform-as-a-Support (PAAS) which helps to integrate multiple unbiased systems/purposes for a company 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 choices) like: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4hanacloudportal15714.shotblogs.com/hana-cloud-integration-42235876