A very interesting and important article published by cloudspectator
A 5-day analysis on cloud performance and pricing on the top IaaS providers in the industry: Amazon EC2, Rackspace Cloud, Windows Azure, HP Cloud, and SoftLayer CloudLayer Compute.
With a lack of standardization in the IaaS industry, providers freely use unique terminology to describe their VM resource allocations. How do you compare an ECU to an HPCCU to a vCPU? This report examines the performance and pricing of 5 of the world’s largest IaaS providers over a 5-day period, and provides a process to clearly determine the price-performance value of a cloud provider, addressing the issue of standardization in the marketplace.