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2.1.2. Scalable IT resources

Cloud computing has the advantage that it is possible  to scale the amount of available server space due to a dynamic load  distribution. That means that only the needed IT resources can be rented,  unlike as when using traditional data centers. The estimated average server  utilization in data centers range from 5% to 20% (Armbrust et al, 2009). In  nonpeak times the available resources are mostly not used and thereby idle.
On the one hand, if the business grows quick the  scalability of cloud computing allows the renting of additional capacity  without long processes of buying, receiving and adjusting the additional IT  resources. On the other hand it is also quick and easy to scale down if the IT  resources are not needed any longer.