How does Tcl work in the cloud?

The titular question is ill-posed, but understandable. [Explain much more.]

DKF has made many pertinent observations based on his own cloud work:

"... it's really about rethinking applications for the internet and not just applications, but also business processes"
"... t's difficult to get right but the big drivers are the fact that it's becoming untenable to build machine rooms for everyone; that's just horribly inefficient"
"... the location of things matters, but it did before anyway even if people didn't know it"
"grid computing is focussed very much on scientific computing with an HPC flavor; cloud computing is more about renting out services"
"cloud computing is primarily not a technical change, but rather a business change, which is why most techies find it awkward ... the heart of cloud computing is not about tech"
"it's a way of sticking virtual machines and services together"
"the important thing about the cloud is that it doesn't try to make the distributedness invisible"
"'porting to the cloud' means adapting the app so that the fact that some or all of it runs remotely is not a problem"
"... think in terms of 'virtual machines for hire'"

Similarly, Steve Landers mentions that, "if we engineered an in-house solution to cope with the peaks we'd have a lot of kit sitting around unused most of the time."

DKF: Also note that there is no "compiler for the cloud"; it's about how to put pieces of applications on servers on the internet, with added virtualization and fine-grained accounting; you use standard compilers.

Fabricio Rocha - 12 Mar 2010 - I have been thinking about this subject these days. My knowledge about cloud computing is minimal, and so I think of it as something that can be done in multiple ways. What exactly is cloud computing? At first, it looks like having very lightweight applications in a desktop, netbook or mobile device (a basic OS and a browser) able to connect to application servers which do the heavy computing. So it looks like Tcl/Tk is very adequate to the task at a server side, thanks to its channels, http support, etc. At the client side I see a problem with the apparent abandon of the Tcl/Tk plugin. Or maybe we need something new, based in HTML5...