Variability management in Infrastructure as a Service: Scenarios in cloud deployment models

Flexible IT landscapes and efficient management of resources are key issues for enterprises. Variability is an important aspect for flexible IT landscape. The main part of the paper discusses variability characteristics in Infrastructure as a Service (IaaS). We show what kind of variability is possible at IaaS. In addition, a case study is provided that shows practical examples of infrastructure variability and how these variability issues can be managed using variability solutions and the software configuration tool Puppet. Software configuration tools enable us to treat infrastructure as code and to meet the varying requirements of customers. In the end, we summarize our paper and provide an outlook for future work.

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