Today’s announcements from Amazon about its Kindle Fire were actually focused on the new Amazon Silk web browser, which divides its processing actions into two segments: the Kindle Fire device itself, and the Amazon Elastic Compute Cloud (EC3).
Microsoft, on the other hand, is still more focused on apps, albeit Metro apps, which live on the local hard drive, and basically revolve around the web browser’s rendering engine. Thus far, Microsoft doesn’t have any plans to shift part of Internet Explorer’s processing to Windows Azure. Although there is a version of IE for PCs and another for Windows Phone devices, neither use the cloud in any form.