THE HETEROGENEOUS NATURE of software and computing platforms leads to a chaotic and fragile web of code in order to make applications appear seamless to the user while sharing data beneath the surface. Further, the salary that programmers demand to rein in the chaos can tax any company and technology department. Even after an application integration job is complete, the resulting system is often unintelligible and difficult to maintain. Web Services create a common architecture and implementation for exp- ing the application functionality that helps programmers integrate systems and create...