The two main data exchange platforms of the Swiss Government serve to declare goods and their value added tax (VAT). They rely on WSO2 to connect different technologies such as SAP and Oracle Weblogic. The advantages of such an exchange platform include Simplified programming Simplified adding of enterprise and e-government services Possibility to move the services from one technology to another Ability to analyze communication problems between the different applications This session will explore the challenges faced when implementing this flexible architecture and how they overcame them with the WSO2 platform.