This documentation is for WSO2 Enterprise Service Bus version 4.9.0 . View documentation for the latest release.

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An inbound endpoint is a message source entry point that can be configured dynamically. In the ESB, when it comes to the existing axis2 based transports, inject messages directly from the transport layer to the mediation layer, without going through the Axis engine. The following diagram illustrates the inbound endpoint architecture.

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Out of the existing transports only the HTTP transport works in a multi-tenant mode. Inbound endpoints support all transports to work in a multi-tenant mode and  provides improved multi-tenancy as well as cluster coordination.supports multi-tenancy, this is one limitation that is overcome with the introduction of the inbound architecture. Another limitation when it comes to conventional Axis2 based transports is that the transports do not support dynamic configurations. With inbound endpoints, it is possible to create inbound messaging channels dynamically, and there is also built-in cluster coordination as well as multi-tenancy support for all transports. 

Based on the protocol, the behaviour of an inbound endpoint can either be listening, polling or event-based.