Green ICT System Architecture Frameworks

Green ICT System Architecture Frameworks

Dave Curtis (MethodScience, Australia) and Amit Lingarchani (MethodScience, Australia)
DOI: 10.4018/978-1-60960-472-1.ch208

Abstract

This chapter introduces the concept of using Enterprise Architecture and associated practices as a method for helping establish and align Green ICT initiatives within organizations as part of an overall ICT Strategy. The chapter introduces the reader to the use of architectural layers – Business, Information, System and Technical as a means of analyzing areas within the ICT environment where Green ICT implementations can have a positive impact. Enterprise Architecture as a function can assist in driving Green ICT initiatives because it is specifically focused as a practice in the long term planning, development and management of an organisation’s ICT environment. This provides the opportunity to embed Green ICT objectives in a way not necessarily possible with traditional business planning.
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Enterprise Architecture Overview

Enterprise Architecture (EA) as a function assists with the progress towards a Green ICT environment within an organization (Eas, 2009). Before expanding on this statement, it is important to understand what Enterprise Architecture is and its overall purpose as a function within an organization.

Enterprise Architecture is “a means of ensuring that the ICT strategy of an organization is aligned to its business objectives, goals and vision”. Therefore, Enterprise Architecture is an important strategic element of the organization. An EA:

  • Provides a mapping between strategic objectives and the ICT capabilities that an organization requires to deliver them.

  • Details the Operating Model of an organization which highlights the “core” capabilities required in the environment.

  • Provides a framework for detailing the architectural models - business, information, system and technology necessary to deliver the target state.

  • Provides a governance framework to drive decision making related to the progress towards the end state architecture. This includes decisions related to priorities, standards and technology alignment amongst others.

  • Provides a feedback mechanism constantly updating the current state as new initiatives are completed, new capabilities realized and environmental changes are made.

Figure 1, based on Ross et al. (2006) Foundation for Success, provides an overview of how these components interact to effect this evolution:

Figure 1.

Enterprise architecture interaction model (Curtis, 2009)

As is seen from Figure1, an EA program typically contains a number of streams:

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