In the Cloud Integration capability within SAP Integration Suite, XML is the internal message format that is used. XML stands for Extensible Markup Language and is a standard format for representing structured data. All messages that are processed by the Cloud Integration capability are converted to XML internally and then transformed to the desired format at the outbound channel. Reference: Modernize Integration with SAP Integration Suite | openSAP

To connect an SAP backend system through the Cloud Connector with an API provider, you must use the on-premise connection type. The Cloud Connector acts as a link between SAP Integration Suite and on-premise systems, enabling secure and controlled access to the backend resources. The on-premise connection type allows you to specify the internal host and port of the backend system, as well as the virtual host and port that will be exposed to SAP Integration Suite. You can also define access control rules and protocols for the on-premise connection. Reference: Part 2: Connect to on-premise APIs from SAP Cloud Platform API Management Cloud Foundry Environment | SAP Blogs, How to configure SAP Cloud Connector & Create API using SCP API Management | SAP Blogs

The "Open Integration" principle of the SAP Integration Suite means that SAP Integration Suite by default supports third-party software integration. The SAP Integration Suite is an open and modular iPaaS that allows you to integrate any system or application, regardless of whether it is from SAP or not. The SAP Integration Suite provides various connectors, adapters, APIs, and pre-built integrations that enable you to connect to third-party software with ease and flexibility. Reference: Integration Software | SAP Integration Suite, Modernize Integration with SAP Integration Suite | openSAP

To find out which entity sets are available in the OData V2.0 interface, you must retrieve the metadata document from the interface. The metadata document is an XML document that describes the data model of the OData service, including the entity types, entity sets, associations, functions, and actions. The metadata document can be accessed by appending $metadata to the service root URL of the OData service. For example, if the service root URL is https://services.odata.org/OData/OData.svc/, then the metadata document URL is https://services.odata.org/OData/OData.svc/$metadata. The metadata document can be used to discover the structure and capabilities of the OData service and to generate client code or proxies. Reference: Overview (OData Version 2.0) | OData - The Best Way to REST, OData API v2 Reference | SAP Help Portal

Some aspects of "holistic integration" of the SAP Integration Suite are process integration, event integration, and data integration. Process integration refers to the orchestration and automation of business processes across different systems and applications. Event integration refers to the communication and coordination of events between different sources and consumers. Data integration refers to the extraction, transformation, and loading of data between different sources and targets. Reference: Integration Software | SAP Integration Suite, Modernize Integration with SAP Integration Suite | openSAP