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# Cloud Integration
Cloud Integration allows you to build and run integration flows across cloud, on-premise, and hybrid landscapes for application-to-application \(A2A\), business-to-business \(B2B\), and business-to-government \(B2G\) scenarios.
This capability allows you to discover, design, and operate scenarios for end-to-end process integration.
It supports end-to-end process integration through the exchange of messages.
You can process messages in real-time scenarios spanning different companies, organizations, or departments within one organization.
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## API Access
Cloud Integration provides APIs for accessing and managing resources, which can be tested on the SAP Business Accelerator Hub. To interact with Cloud Integration using the API, you must create a service instance and service key for inbound authentication.
APIs are provided on the [SAP Business Accelerator Hub](https://api.sap.com/), where you can test the APIs against your existing tenants.
You can use standard HTTP methods \(for example, the GET method\) to call the API.
You can access the OData APIs at [Cloud Integration \(SAP Business Accelerator Hub\)](https://api.sap.com/package/CloudIntegrationAPI/odata). There you can also find detailed descriptions of each API call.
**Related Information**
[Understanding the Basic Concepts](understanding-the-basic-concepts-a81309f.md "Learn more about the concept behind Cloud Integration.")
[Connectivity Options](connectivity-options-93d82e8.md "SAP Integration Suite provides you with a comprehensive set of options to connect to SAP and non-SAP systems.")
[Integration Capabilities](integration-capabilities-e32cede.md "There is a wide range of integration capabilities that define different ways how messages can be processed on the integration platform and exchanged between sender and receiver systems.")
[System Scope for Cloud Integration](system-scope-for-cloud-integration-8ea3822.md "")
