"Not that Red Hat or any other software company has
much of a chance of making money from Amazon's EC2 compute cloud
and related S3 and EBS storage clouds, of course. Amazon has
created its own software stack, which it is very secretive about
but which uses the open source Xen hypervisor and heaven only knows
what other open source and homegrown tools to manage the compute
and storage slices.
But if you want to do cloud computing - and let's face it, some
portion of computing will be done on private and public clouds -
you have to engage with Amazon and other emerging cloud providers
like IBM with its IBM Cloud and Sun
Microsystems Oracle with its Sun
Cloud. Even if this does sound like a lot of marketing fluff on
what can honestly be called computing."