In this chapter, we have seen how easy it is to create a simple integration in ICS between two web services using different technologies. We looked at the processes of creating and testing the necessary connections and the creation of the integration itself.

In demonstrating the integration, we have seen how to use apiary to document and mock our backend REST service. We finally tested the integration using SoapUI to invoke the SOAP service, exposed by our integration, and explained the attached security policy, and the need to add a valid WS-Security UsernameToken header to identify the requester as a valid user of ICS.

In the next chapter, we will look at another kind of integration that we can build in ICS. We will build our first publish/subscribe integration, using the ICS Messaging Service, and bring this idea alive by creating an integration that represents a flight update being received, and then sent onto one then multiple destinations.