SAP HCI is intended as Integration Platform-as-a-Provider (PAAS) which helps you to integrate a number of impartial techniques/programs for a business process. HCI can perform Cloud to Cloud, Cloud to On-premise, On-premise to On-premise and Hybrid design. HCI delivers Adapters (Connectivity possibilities) for example: SOAP Adapter, IDoc, HTTP, Mail, SFTP,Ariba, https://felixsojcv.blogocial.com/hana-cloud-integration-64268893