SAP HCI is designed as Integration Platform-as-a-Assistance (PAAS) which really helps to combine 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 offers Adapters (Connectivity choices) including: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://s4hanacloudfaq10088.blogs-service.com/59348458/hana-cloud-integration