I remember how excited and at awe I was when I first had internet connection installed to my PC. Of course, it was still dial-up and was prone to a lot of disconnection (not to mention long downloading time). That was only years ago but major IT development later, many people, companies, and institutions now have broadband connection. It has almost become indispensable. Here enters the importance of interoperability so web applications are developed so that different platforms can interact and work together. By using web services to applications, its function can then be published to practically anywhere in the world.