2010 by Taylor & Francis Group, LLC. The goal of this chapter is to present an overview of three different structured views of the cloud computing landscape. These three views are the SPI cloud classification, the UCSB-IBM cloud ontology, and Hoffs cloud model. Each one of these three cloud models strives to present a comprehension of the interdependency between the different cloud systems as well as to show their potential and limitations. Furthermore, these models vary in the degree of simplicity and comprehensiveness in describing the cloud computing landscape. We find that these models are complementary and that by studying the three structured views, we get a general overview of the landscape of this evolving computing field.
