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Roadmaps for Enterprise Architecture Evolution. Bachelor’s Thesis, Technische Universit¨at M¨unchen (2009)

by Alexander Schneider
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Using Enterprise Architecture Management Patterns to complement TOGAF

by Sabine Buckl, Er M. Ernst, Florian Matthes, René Ramacher, Christian M. Schweda, Technische Universität München
"... management function for an enterprise is no easy task. Various frameworks exist as well as EA management tools, which promise to deliver guidance for performing EA management. Nevertheless, the approaches presented by them stay either on a level too abstract to provide realization support or are far ..."
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management function for an enterprise is no easy task. Various frameworks exist as well as EA management tools, which promise to deliver guidance for performing EA management. Nevertheless, the approaches presented by them stay either on a level too abstract to provide realization support or are far too generic, neglecting enterprise-specific EA related concerns. In this article, we discuss the architecture framework of The Open Group (TOGAF) and detail on its promising but nevertheless highly generic architecture development method (ADM). This article shows how the generic development steps can be complemented by a pattern based approach to EA management providing guidance for addressing specific EA related concerns with stepby-step methodologies as well as with corresponding viewpoints and information models.
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...ent the ADM phase F: The aspect of time-dependence arising in the context of migration planning leads to certain demands regarding an information model and the visualizations used in this phase [26], =-=[27]-=-. An exemplary information model and viewpoints supporting this phase are given in Section IV. In the phase Implementation Governance (G) the projects selected for realization in the preceding phase a...

Towards a More Integrated EA Planning: Linking Trans- formation Planning with Evolutionary Change

by Stephan Aier, Sabine Buckl, Bettina Gleichauf, Florian Matthes, Christian M. Schweda, Robert Winter
"... Abstract: Enterprises are subject to continuous change driven by top-down planned transformation projects as well as by bottom-up initiatives realizing what is called the evolution of the enterprise. Enterprise architecture (EA) planning pre-sents itself as a means for facilitating and controlling t ..."
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Abstract: Enterprises are subject to continuous change driven by top-down planned transformation projects as well as by bottom-up initiatives realizing what is called the evolution of the enterprise. Enterprise architecture (EA) planning pre-sents itself as a means for facilitating and controlling this change. Nevertheless, the methods and models of EA planning developed in recent years either have a strong focus on planned (proactive) transformations or on guided (reactive) evolution. In this paper, we outline an EA planning method that accounts for both types of en-terprise change by illustrating the interplay of EA planning, requirements, release, and synchronization management. Specifically we focus on the coordination of de-sign activities modeled as intermeshed closed-loop control systems and on an inte-grated information model describing EA transformation planning.
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...rnally and externally validated set of requirements has been converted to an agreed project portfolio (R4), synchronization management aims at the interdependencies between the changed projects (R9). =-=[ES10]-=- describes a method for identifying such dependencies exemplified along the following three types of dependencies: 1) organizational dependencies, resulting from multiple projects targeting the same p...

Article An Information Model for Managed Application Landscape Evolution

by Sabine Buckl, Alexander M. Ernst, Florian Matthes, Christian M. Schweda , 2009
"... Planning, managing, and maintaining the evolution of the application landscape is a focal point of enterprise architecture (EA) management. Whereas, planning the evolution of business support provided by the business applications is understood as one challenge to be addressed in landscape management ..."
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Planning, managing, and maintaining the evolution of the application landscape is a focal point of enterprise architecture (EA) management. Whereas, planning the evolution of business support provided by the business applications is understood as one challenge to be addressed in landscape management, another challenge arises in the context of traceability of management decisions. This article discusses the requirements regarding support for landscape management as risen by practitioners from industry, gathered in an extensive survey during which the tool support for EA management was analyzed. Thereby, a lack of support for this management discipline was discovered, which is caused by the way, application landscapes are modeled in tools. We subsequently discuss how to incorporate these requirements into an information model.
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....g. the changes performed by projects up to that specific future date. The various projects and their impacts transforming the EA from current to a planned state, can be made explicit using roadmaps (=-=Buckl et al, 2009-=-). As a long term perspective the target landscape shows the architecture of the application landscape as envisioned at a certain time following the strategies and goals of the enterprise. There is no...

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