| Azure API Management | <p>The API Management service allows you to send messages to a Service Bus queue/topic in your Service Bus Namespace.</p><ul><li>You can trigger custom workflows by sending messages to your Service Bus queue/topic when an API is invoked by using the [send-request policy](../../api-management/api-management-sample-send-request.md).</li><li>You can also treat a Service Bus queue/topic as your backend in an API. For a sample policy, see [Authenticate using a managed identity to access a Service Bus queue or topic](https://github.com/Azure/api-management-policy-snippets/blob/master/examples/Authenticate%20using%20Managed%20Identity%20to%20access%20Service%20Bus.xml). You also need to do the following steps:<ol><li>Enable system-assigned identity on the API Management instance. For instructions, see [Use managed identities in Azure API Management](../../api-management/api-management-howto-use-managed-service-identity.md).</li><li>Add the identity to the **Azure Service Bus Data Sender** role on the Service Bus namespace</li></ol></li></ul> |
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