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    On the Conceptualization of Information Systems as Socio-Technical Phenomena in Simulation-Based Research
    (Association for Information Systems, 2015-12-13) ; ;
    Information Systems (IS) are specified as complex socio-technical systems that display dynamic and emergent behaviors. Simulation-based studies provide a useful tool for analyzing such systems; however, the current presence and impact of simulation-based IS studies is limited. The socio-technical interactions and inherent dynamics of information systems make the development of IS simulations attractive, but challenging. Building simulations in this context requires both accurate conceptualizations of the underlying socio-technical systems as well as a sound transfer of these conceptualizations into simulation models. This study proposes an analysis framework that conjointly captures both the socio-technical system models as well as the derived simulation models. This allows for a critical assessment of the status quo of the extant simulation-based IS research. The identified relations are analyzed and seven propositions are derived, which provide guidance for prospective simulation-based research.
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    Visualizing and Measuring Enterprise Application Architecture: An Exploratory Telecom Case
    (Harvard Business School, 2013-01-01)
    Lagerstroem, Robert
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    Baldwin, Carliss Y.
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    MacCormack, Alan
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    We test a method for visualizing and measuring enterprise application architectures. The method was designed and previously used to reveal the hidden internal architectural structure of software applications. The focus of this paper is to test if it can also uncover new facts about the applications and their relationships in an enterprise architecture, i.e., if the method can reveal the hidden external structure between software applications. Our test uses data from a large international telecom company. In total, we analyzed 103 applications and 243 dependencies. Results show that the enterprise application structure can be classified as a core-periphery architecture with a propagation cost of 25%, core size of 34%, and architecture flow through of 64%. These findings suggest that the method could be effective in uncovering the hidden structure of an enterprise application architecture.
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    Business Models in the Data Economy: A Case Study from the Business Partner Data Domain
    (Universität Leipzig, 2013-02-27) ; ; ;
    Franczyk, Bogdan
    Data management seems to experience a renaissance today. One particular trend in the so-called data economy has been the emergence of business models based on high-quality data. In this context, the paper examines the business partner data domain. Business partner data comprises unique identifiers, unambiguous names, or subsidiary information of business partners. The paper explores as to how and why business models of business partner data providers differ. Based on a study of six cases, the paper identifies three different business model patterns. A resource based view is used to explore the details of these patterns. Furthermore, the paper develops a set of propositions with regard to the establishment and evolution of certain business models. Furthermore, the paper discusses a market transformation from a traditional value chain toward a value network paradigm-a change which would seriously threaten the business models of established data providers such as Dun Bradstreet.
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    How to Preserve Agility in Service Oriented Architectures - An Explorative Analysis
    (Ges. für Informatik, 2010) ;
    Although companies introduced enterprise application integration (EAI) a couple of years ago, the complexity of corporate application landscapes is ever increasing. The current wave of technology being introduced into these application landscapes are service oriented architectures (SOA). Not unlike EAI before the introduction of these technologies is associated with re-use of software components and reaping cost cutting potentials. But when looking at the still increasing complexity of application landscapes following the introduction of SOA, the re-use and cost cutting arguments lead to disappointment. However, SOA offers a great potential to increase corporate agility. In order to gain and preserve corporate agility it is necessary to explicitly manage enterprise architecture. This paper discusses the problems of re-use and cost cutting expectations in SOA and contrasts them with the potentials related to make sustainable contributions to corporate agility. Structures, processes, and instruments to realize these potentials are discussed with reference to a literature review as well as to selected case studies.
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    Untangling EA’s Long Path of Becoming a Partner for Business Transformation: The Case of Swiss Federal Railways
    (IEEE Computer Society, 2016-09-05) ; ; ;
    Rytz, Bernhard
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    Dijkman, Remco
    We analyze the enterprise architecture management (EAM) ‘journey’ of the Swiss Federal Railways over the last twenty years. Fundamental organizational changes were matched by shifts of EAM’s focus from advocating an enterprise-wide perspective over developing the enterprise architecture toolbox to establishing business transformation support. Beyond maturity considerations, insights from this longitudinal case study can be gained from an institutional perspective, i.e., by describing the EAM journey not only as a process of establishing the EAM function, but also as a process that extends EAM effects beyond the boundaries of IT. We identify four principles that guided this process: (1) Consistency of norms and values (2) Focus on reinventing rather than maturing (3) Picking the right EAM ‘battles’, and (4) Playing on EAM’s holistic perspective.
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    Scopus© Citations 7
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    On the role of complexity for guiding enterprise transformations
    (Springer, 2015-06-15) ; ; ;
    Aveiro, David
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    Pergl, Robert
    While there is a general agreement on the need for tools, which guide the evolution of complex organizational systems, and while there already exists a wealth of tools and approaches for the measurement and management of complexity, it seems that in practice these approaches often fail to achieve the desired impact during transformation processes. Based on focus group data and based on related literature, we analyze the factors that hinder current complexity management systems from guiding enterprise transformations and contribute a set of design principles, which address these factors. In particular, it is important to be aware of the context, to use a consistent ontology, to pay attention to visualization and to raise awareness and support.
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    Scopus© Citations 10
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    A Federated Approach to Enterprise Architecture Model Maintenance
    (Ges. für Informatik, 2007-12-01)
    Fischer, Ronny
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    Enterprise architecture is gaining acceptance as an approach to manage change and foster IT/business alignmentby (1) propagating strategy and process changes to the software and infrastructure level, by (2) supportingconsistent business transformation enabled by technology innovations, and by (3) decoupling business-oriented andtechnology-oriented architectures. Due to constant change in business as well as in technology, enterprisearchitecture management is a permanent process rather than a one-time effort. To keep enterprise architecturemodels up-to-date, a well-engineered maintenance concept including processes, roles and schedules is needed. Thispaper discusses the shortcomings of existing approaches to enterprise architecture model maintenance, proposes afederated approach, and reports on its implementation at a large financial service provider.
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    Implementing Architectural Thinking: A Case Study at Commerzbank AG
    (Springer, 2015-06-08) ; ;
    Pähler, Patrick
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    Persson, Anne
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    Stirna, Janis
    The discipline of enterprise architecture (EA) has become well-established in many organizations and is continuously discussed in academic literature. However, EA's effectiveness beyond IT is limited. The paradigm of architectural thinking aims at reaching the 90% of an organization that is not related to IT. The paper contrasts the abstract definitions of architectural thinking with empirical case study data. We find that practice has developed implementations of these abstract definitions. However, we also find new characteristics of architectural thinking that have not yet been discussed in literature. Specifically, these are the role of decisions and the role of formal governance mechanisms.
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    Scopus© Citations 15
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    A Major Transformation at a Global Insurance Company
    (Springer International Publishing - Springer, 2017) ; ; ;
    Proper, Henderik A.
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    In this chapter we report on the case of a globally operating insurance company that has leveraged enterprise architecture management to support business transformations. In order to do so, the company has developed enterprise architecture management capabilities that help the business structuring the business transformation particularly in the early stages before handing over respective responsibilities to more specialized corporate functions later on. This case is interesting for understanding ACET because it is one of the rare cases where enterprise architecture management truly bridges the business–IT gap.
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