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Browsing by Author "Santos, Nuno"

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  • Using the NIST reference model for refining logical architectures
    Publication . Pereira, António; Machado, Ricardo J.; Teixeira, Juliana; Santos, Nuno; Lima, Ana; Fernandes, José Eduardo
    The emergence of the Internet as a ubiquitous means of communication fostered the growth of new business and service models based on Cloud Computing. Information and Communication Technology companies use reference models to define their Cloud Computing strategies. NIST Cloud Computing Reference Architecture is one of these reference models that assist in the design of business, services, and architecture models. This paper aims to present the use of NIST reference architecture in the design of Cloud Computing architectures by employing a method that enables the application of the reference architecture to the refinement of logical architectures. © 2014 Springer International Publishing.
    2014Conference paper Open access Show more
  • A V-model approach for business process requirements elicitation in cloud design
    Publication . Ferreira, Nuno; Santos, Nuno; Machado, Ricardo J.; Fernandes, José Eduardo; Gasevic, Dragan
    The benefits of cloud computing approaches are well known but designing logical architectures for that context can be difficult. When there are insufficient inputs for a typical (product) approach to requirements elicitation, a process-level perspective is an alternative way for achieving the intended logical design. We present a V-Model based approach to derive logical architectural models to execute in the different cloud layers from a process-level perspective, instead of the traditional product-level perspective. This V-Model approach encompasses the initial definition of the project goals and the process-level perspective of the systems intended logical architecture. The approach application results in the creation of a validated process-level structure and behavior architectural models that create a context for eliciting requirements for a cloud product. Throughout this process, we assess our decisions based on the ARID method to identify process vulnerabilities and evaluate the quality of the derived logical architecture. We introduce a case study where our approach was applied and the resulting logical architectural model is presented.
    2014Book part Restricted access Show more