This article is by Amazon’ CTO Werner Vogels.
Vogles believes that virtualization is more than just consolidation:
“Virtualization breaks the 1:1 relationship between applications and the operating system and between the operating system and the hardware.”
“Single averages seldom tell the whole story.”
Vogels discusses how much this issue is magnified in government IT
“One DoD IT architect reported that the department’s software prototype normally would cost $30,000 in server resources, but by building it in virtual machines for Ama- zon EC2, in the end it consumed only $5 in resources.”