An initiative from The Open Group has developed a set of key considerations for how to build and measure return on investment (ROI) for cloud computing initiatives from a business perspective. By examining the benefits cloud computing offers organizations and showing the potential return it can provide from the beginning, companies may find it easier to gain buy-in for cloud initiatives from the executive team, as well as the IT department.

Cloud computing has been described as a technological change brought about by the convergence of a number of new and existing technologies. The promise of cloud computing is identified primarily by the following key technical characteristics:

• The ability to create the illusion of infinite capacity performance is the same if scaled for one or one hundred or one thousand users with consistent service-level characteristics.
• Abstraction of the infrastructure so applications are not locked into devices or locations.
• Pay-as-you-go usage of the IT service; you only pay for what you use, with no or minimal up-front investment costs. You typically just use the service through a connection and device.
• Service is on-demand and able to scale up and down with near instant availability. Typically, no forward planning forecast is required.
• Access to applications and information can be obtained from any access point.

But this is only half the story. These technical characteristics can also be found in many non-disruptive technology solutions. What sets the promise of cloud computing apart is that the rate of change, magnitude of cost reduction and specific technical performance impact that cloud computing can provide is not just incremental, but can give a five-to-ten times order of magnitude of improvement.