Implementing a cloud computing architecture ultimately is the next generation in cost management -- a shifting of traditional IT platforms to a resource-efficient, dynamic, hosted framework. Although this cost-based view of the cloud dominates the dialogue on cloud adoption, it falls short of the complete picture.

Beyond cost, line departments are looking to implement a cloud computing architecture to enhance worker productivity. To these departments, the biggest benefit of implementing a cloud computing model is the model's ability to apply IT tools faster and more flexibly. Line departments want flexibility in presenting application services to users and in assigning applications to resources based on cost and other metrics. This means looking at the overall IT architecture -- specifically the network -- in a whole new way.

Cloud computing model efficiency calls for flexibility in applications and resource pools

Both forms of flexibility require an evolution in two areas of technology. One is the evolution of applications to a simple application programming interface (API) integration model, where each application service is presented as a URL and composed into worker screens as needed. The other is the evolution of virtualization from static partitions in a data center to dynamic pools of resources that can be hosted anywhere and by anyone. In an effective cloud computing model, individual workers would get the data they need in an optimal form