SAP HCI is designed as Integration System-as-a-Company (PAAS) which really helps to combine many impartial programs/apps for a business procedure. HCI can do Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid product. HCI presents Adapters (Connectivity selections) which include: Cleaning soap Adapter, IDoc, HTTP, Mail, SFTP,Ariba, oData. https://fernandolhauo.blazingblog.com/28212127/hana-cloud-integration