With the global business scenario becoming increasingly volatile, enterprises are vary of making heavy capital expenditure on IT infrastructure. If the IT projects do not take off as expected, enterprises will be left with expensive IT infrastructure without making complete use of them. On the other hand if they need to commission infrastructure in short notice, they will not have enough time to evaluate all the alternatives and may end up spending more than required. Hence enterprises are looking at ways to scale their IT infrastructure up or down in short notice based on the business needs.