One of the key capabilities of SAP Marketing Cloud is integration. Its various integration options and approaches simplify the process.
The integrations are based on released APIs using Web Service technology such as OData or SOAP, and not on RFC, SLT, or direct database connections. SAP Cloud Integration is the preferred middleware technology and the way to go for most integrations.
It connects cloud applications with other SAP and non-SAP cloud and on-premises applications. The configuration for integrations is done using the Communication Systems, Communication Users, and Communication Arrangements applications.

The SAP API Business Hub is the web-based application you can use to search, explore, and test SAP and partner APIs you can leverage to build extensions or process integrations more easily using SAP Cloud Integration. The SAP API Business Hub simplifies the development process and reduces effort for application and integration developers.
To discover which APIs are available for SAP Marketing Cloud, visit the SAP API Business Hub at api.sap.com, and search for SAP Marketing Cloud. You can explore a package and see the detailed documentation, references, and even try it out to test and validate.
For more information on integration, check out the Integration Guide documentation on the SAP Help Portal, under the Implement tab.
