SAP HCI is built as Integration System-as-a-Service (PAAS) which helps to combine multiple unbiased units/purposes for a company approach. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid model. HCI offers Adapters (Connectivity choices) like: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. Some of https://s4-hana-cloud-portal14703.wssblogs.com/28188303/hana-cloud-integration