To define a request-response pattern, it is necessary to ensure that mobile-ready interfaces are present in the enterprise services that are created in the ESB. This pattern provides support for the integration of mobile services in an ESB architecture. A special type of adapter customized for mobile services called a mobile integration adapter helps to integrate mobile applications with the mobile-related services that are running in the ESB. The major steps involved in this mobile integration are depicted in the following diagram:

Here is how the integration happens:

1. As a first step, the mobile adapter sends the inbound request directly to the enterprise service.
2. Then the enterprise service present in the ESB establishes a connection with the required backend systems to process the inbound request. The ESB also works with the backend systems to get a response.
3. At last, the ESB sends the response to the mobile adapter which in turn passes the response back to the mobile application.