Cognizant believes the evolution of cloud solutions will take two distinct steps. The first will be a better, faster, cheaper way of delivering current IT solutions. An example today is Google Apps with corporate e-mail platforms. The second step, says Coburn, will come “when we can do new things with the cloud model at a business level. This will occur when organizations use social computing on the cloud in a business context, enabling particular platforms of collaboration around specific business problems.” Another way it will evolve is the varied adoption for public clouds versus private clouds.
Read the original article and look at different opinions of the cloud. I was doing some loud thinking about “How Will Cloud Computing Impact Software Industry” here http://dorai.wordpress.com/2010/10/02/impact-of-cloud-computing/