9.1 Where Are We?

In the "understanding" phase, we need to understand the technologies used in the legacy system, as well as the target, modernization technologies. This is the last of three chapters that explore the information system technologies that both populate and constrain the solution space for RSS. In this chapter, we consider Enterprise JavaBeans, message-oriented middleware, Java 2 Enterprise Edition, and XML messaging as elements of a software infrastructure solution for RSS.