Can Web Services & SaaS be used to replace Client Service applications?

Obviously web services are just that - services. Therefore this may seem like a ridiculous question.

However, I don’t think it is. After all, an application is simply multiple modules communicating with each other via procedure / method / function calls.

IBM & Energy Trading Web Services??

I did a google search for web services energy trading and to my amazement who should appear 6th on the list but IBM!  It is not a dated document either… it’s a PDF dated 2006 titled “The next generation of energy trading 
To reach new levels of functionality and maturity, companies need to know where the risk is, how […]