Participants will learn more about emerging technologies that address the problem of the front end - back end. Participants will also learn about a powerful co-development model that speeds J2EE application development by enabling .NET and J2EE developers to co-develop enterprise-class J2EE Web applications and Web services. Also included will be a demonstration of the co-development model on JBoss using a .NET - J2EE version of the Java Petstore, and describe how it presents a sustainable development model.