SAP HCI is developed as Integration Platform-as-a-Provider (PAAS) which really helps to combine many unbiased units/purposes for a company course of action. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI gives Adapters (Connectivity possibilities) for example: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, https://s4-hana-cloud-edition27160.blogspothub.com/27770582/hana-cloud-integration