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  • 101.
    Närman, Per
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Franke, Ulrik
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Data Collection Prioritization for System Quality Analysis2009Inngår i: Electronic Notes in Theoretical Computer Science, 2009, Vol. 233, nr C, s. 29-42Konferansepaper (Fagfellevurdert)
    Abstract [en]

    When assessing software quality the cost of collecting the data needed for analysis is often quite substantial. This paper proposes the use of Bayesian networks for assessing software qualities combined with an algorithm for how to prioritize which data to collect in order to minimize the cost of the assessment. This algorithm, the Diagnosis algorithm, is implemented in the Bayesian network tool 'GeNIe'. An example evaluation of service interoperability in the paper demonstrates that using the algorithm may reduce time spent on data collection significantly.

  • 102.
    Närman, Per
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Nordström, Lars
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Enterprise Architecture: A framework supporting system quality analysis2007Inngår i: 11TH IEEE INTERNATIONAL ENTERPRISE DISTRIBUTED OBJECT COMPUTING CONFERENCE, PROCEEDINGS, LOS ALAMITOS: IEEE COMPUTER SOC , 2007, s. 130-141Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Enterprise Architecture is a model-based approach to business-oriented IT management. To promote good IT decision making, an enterprise architecture framework needs to explicate what kind of analyses it supports. Since creating enterprise architecture models is expensive and without intrinsic value, it is desirable to only create enterprise architecture models based on metamodels that support well-defined analyses. This paper suggests a metamodel derived specifically with a set of theory-based system quality analyses in mind The ISO 91 26-bused theory behind the system quality analysis is introduced in the shape of an extended influence diagram. Finally an example illustrates that our theory-based metamodel does support system quality analysis.

  • 103.
    Närman, Per
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Schönherr, Marten
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Chenine, Moustafa
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Using Enterprise Architecture Models for System Quality Analysis2008Inngår i: EDOC 2008: 12TH IEEE INTERNATIONAL ENTERPRISE DISTRIBUTED OBJECT COMPUTING, PROCEEDINGS  , IEEE Computer Society, 2008, s. 14-23Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Enterprise Architecture is a model-based approach to business-oriented IT management. To promote good IT decision making, an Enterprise Architecture framework needs to explicate what kind of analyses it supports. Since creating Enterprise Architecture models is expensive and without intrinsic value, it is desirable to only create Enterprise Architecture models based on metamodels that support well-defined analyses. This paper presents the content and extension of a metamodel which supports creating models containing the information necessary to conduct system quality analyses, specifically with respect to availability, accuracy, confidentiality and integrity. The metamodel is an extension and formalization of the metamodel underlying the ArchiMate modelling language for Enterprise Architecture. The use of the extended metamodel is demonstrated in a case study where the availability, accuracy, confidentiality and integrity of the two Service Oriented Architecture (SOA) platforms Sun JCaps and PrOSeRO were evaluated.

  • 104.
    Närman, Pia
    et al.
    KTH, Skolan för elektro- och systemteknik (EES).
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Analyzing Coordination and Flexibility in Organizations Using Enterprise Architecture2016Inngår i: 2016 IEEE 20TH INTERNATIONAL ENTERPRISE DISTRIBUTED OBJECT COMPUTING WORKSHOP (EDOCW), IEEE, 2016, s. 106-113Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The structure of organizations impact their performances. Here, we present a framework based on enterprise architecture to analyze the impact organization structure has on flexibility and coordination within an organization. The framework incorporates organization structure theories by Henry Mintzberg using the Object Constraint Language (OCL) and the Unified Modeling Language (UML) in the modeling tool Enterprise Architecture Analysis Tool (EAAT). The framework has also been applied on a case study where the suitability of three organizations' structures with regards to flexibility and coordination are analyzed.

  • 105.
    Pantazis, Konstantinos
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Buschle, Markus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Österlind, Magnus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    The Enterprise Architecture Analysis Tool for Decision-Making: a case study2013Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    In this paper a tool for Enterprise Architecture Decision-making is proposed and its usage is described. Firstly, the Enterprise Architecture Analysis Tool (EAAT), which has been developed by the Industrial Information and Control Systems (ICS) department of KTH, is described. This tool has been used during a case study at a large Nordic company in order to create present and future state models for measuring service availability. These models, which are based on a metamodel, enable us to analyze service availability and identify bottlenecks of the company’s Enterprise Architecture. Subsequently the results of the case study are presented, showcasing that the changes proposed are beneficiary for company’s Enterprise Architecture. Finally it can be concluded that the case study validated that the tool is very helpful in decision making for Enterprise Architecture, but, nevertheless, some improvement suggestions are proposed.

  • 106. Pires, Luis Ferreira
    et al.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Report Workshop 52013Inngår i: ENTERPRISE INTEROPERABILITY: RESEARCH AND APPLICATIONS IN THE SERVICE-ORIENTED ECOSYSTEM, ISTE LTD , 2013, s. 181-183Konferansepaper (Fagfellevurdert)
  • 107. Ralph, Paul
    et al.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Jordan, Howell
    Report on the first SEMAT workshop on general theory of software engineering (GTSE 2012)2013Inngår i: Software Engineering Notes: an Informal Newsletter of The Specia, ISSN 0163-5948, E-ISSN 1943-5843, Vol. 38, nr 2, s. 26-28Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    Many academic disciplines have general theories, which apply across the discipline and underlie much of its research. Examples include the Big Bang theory (cosmology), Maxwell's equations (electrodynamics), the theories of the cell and evolution (biology), the theory of supply and demand (economics), and the general theory of crime (criminology). Software engineering, in contrast, has no widely-accepted general theory. Consequently, the SEMAT Initiative organized a workshop to encourage development of general theory in software engineering. Workshop participants reached broad consensus that software engineering would benefit from better theoretical foundations, which require diverse theoretical approaches, consensus on a primary dependent variable and better instrumentation and descriptive research.

  • 108. Sandström, Erik
    et al.
    Sturm, Monika
    Urcun, Mathieu
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lemmet, Maryse
    Månsson, Tore
    Berrier, Marc
    Enterprise Application Integration in the electric Power Industry2004Bok (Annet vitenskapelig)
  • 109.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    62006Inngår i: Assessment of IT Governance- A Prioritization of Cobit / [ed] Bandamutha, Ravi Kumar Jain, Icfai University Press, 2006, s. 69-85Kapittel i bok, del av antologi (Fagfellevurdert)
  • 110.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Assessement of IT governance: A prioritization of cobit2006Inngår i: Proceedings of the Conference on Systems Engineering Research, Studentlitteratur, 2006Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    A shared view on the definition of IT governance is lacking and practitioners do not use present IT governance frameworks to support their decision-making. A commonly agreed upon definition of IT governance would be very useful and would serve the development and refinement of IT governance frameworks and assessment methodologies. This article presents an Architecture Theory Diagram, ATD, and a framework for defining IT governance based on an extensive literature study. IT governance is the preparation for, making of and implementation of IT-related decisions regarding goals, processes, people and technology on a tactical or strategic level. The framework for defining IT governance was used to compare how IT governance is defined in literature, and within a group of IT governance experts. Cobit is the most well-known framework for IT governance and it is frequently used by practitioners. While comparing Cobit?s definition of IT governance to the previously identified concerns of literature and practitioners, it showed that Cobit does support most needs, but lacks in providing information on how decisionmaking structures should be implemented.

  • 111.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Defining IT governance - A consolidation of literature2005Rapport (Annet vitenskapelig)
  • 112.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    The IT Organization Modeling and Assessment Tool: Correlating IT Governance Maturity with the Effect of IT2008Inngår i: Proceedings of the 41st Hawaii International Conference on System Sciences, 2008Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Does good IT governance improve the effect of IT? This paper presents the IT Organization Modeling and Assessment Tool (ITOMAT) which has been created to overcome operationalization and subjectivity weaknesses in the Control Objectives for Information and related Technology (COBIT) framework. ITO-MAT was applied to assess IT governance maturity in four case studies. Simultaneously, external metrics of the effect of IT were collected and correlated to the maturity levels. Based on the correlations, a model linking internal and external measures was created. The model can be used to predict the effect of IT given the maturity levels of IT processes.

  • 113.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    IT Governance Decision Support using the IT Organization Modeling and Assessment Tool2008Inngår i: 2008 Portland International Center for Management of Engineering and Technology, Technology Management for a Sustainable Economy, PICMET '08, New York: IEEE , 2008, s. 802-810Konferansepaper (Fagfellevurdert)
    Abstract [en]

    It is important to ensure that the IT governance is not only designed to achieve internal efficiency in the IT organization, such as deploying good IT processes and making sure that the means and goals are docu-mented. The final goal of good IT governance is rather to provide the business with the support needed in order to conduct business in a good manner. This paper describes the IT Organization Modeling and As-sessment Tool (ITOMAT) and how it can be used for IT governance decision making. ITOMAT consists of an enterprise architecture metamodel that describes IT organizations. ITOMAT further contains a Bayesian network for making predictions on how changes to IT organization models will affect the IT governance performance as perceived by business stakeholders. In order to make such predictions accurately, the network learns from data on previous experience. Thorough case studies at 20 different companies have been conducted in order to calibrate the network. Finally, the paper describes a case study where ITOMAT was used to analyze the future impact of two IT organization change scenarios in a medium sized engineer-ing company.

     

  • 114.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    The Effect of IT Governance Maturity on IT Governance Performance2010Inngår i: Information systems management, ISSN 1058-0530, E-ISSN 1934-8703, Vol. 27, nr 1, s. 10-24Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    There are several best practice based frameworks that detail effective arrangements for the internal structure of an IT organization. Although it is reasonable that there is a correlation between the quality of the internal structure of an IT organization - labeled IT governance maturity, and the external impact of the same IT organization on the business - labeled IT governance performance, this has not been validated. The results, based on 35 case studies, confirm the hypotheses of a positive correlation between IT governance maturity and IT governance performance. Among IT processes described in 34 references, the internal structure of the IT organization, clearly defined organizational structures and relationships, mature quality management, and cost allocation show the strongest positive correlation to IT governance performance. The maturity of project management and service level management, as well as performance and capacity management, show almost no correlation to IT governance performance. The findings can be used to improve current frameworks for IT governance.

  • 115.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    The IT Organization Modeling and Assessment Tool for IT governance decision support2008Inngår i: ADVANCED INFORMATION SYSTEMS ENGINEERING, PROCEEDINGS, 2008, Vol. 5074, s. 258-261Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This short paper describes the IT Organization Modeling and Assessment Tool (ITOMAT) and how it can be used for IT governance decision making support. ITOMAT consists of an enterprise architecture metamodel that describes IT organizations. ITOMAT further contains a Bayesian network for making predictions on how changes to IT organization models will affect the IT governance performance as perceived by business stakeholders. In order to make such predictions accurately, the network teams from data on previous experience. Case studies at 35 companies have been utilized for calibration of the network.

  • 116.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Nordström, Lars
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Modeling and Evaluating the Maturity of IT Governance2008Inngår i: Proceedings of the International Council on Large Electrical Systems, CIGRÉ, 2008, s. 8p-Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The enterprise-wide Information Technology (IT) platform at transmission network owners and electric utilities has normally been gradually developed for a long period of time. Each business unit within these companies have, unfortunately often independently, developed and acquired the IT systems needed. The IT platform is therefore normally composed of a considerable number of components, storing redundant data and implementing similar functionality. In the re-regulated power industry, the need for management of IT is made important by the frequent changes in the business environment, such as mergers, acquisitions, and new market rules. IT governance denotes how the IT organization is managed and structured and provides mechanisms that enable the development of integrated business and IT plans, allocation of responsibilities within the IT organization, and prioritization of IT initiatives. It is important to ensure that IT governance is designed not only to achieve internal efficiency in the IT organization, such as deploying good IT processes. The final goal of good IT governance is rather to provide the business with the support needed in order to conduct business in a good manner. Of particular interest is the impact on business performance that a well governed IT organization can have. The Control Objectives for Information and related Technology (CobiT) framework provides the most relevant and detailed support for IT governance processes, activities, roles, documents and metrics available. CobiT?s entities are mainly of desccriptive nature and propose how the IT organization should be structured according to best practice. Another inherent weakness is that CobiT focuses on entities inherent to the IT organization and do not address the external effectiveness of the IT organization. This article desccribes the IT Organization Modeling and Assessment Tool (ITOMAT) which is an IT governance decision support tool. It relies partly on the CobiT framework for internal maturity assessments of the IT organization and is also enhanced with information about statistical correlations to external IT governance performance metrics. This means that the ITOMAT is able to statistically predict external business effectiveness of suggested IT organization scenarios. The paper also presents an example in which ITOMAT is used to predict IT governance performance. The paper ends with discussion, conclusions and references.

  • 117.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Rocha Flores, Waldo
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    It governance decision support using the it organization modeling and assesment tool2011Inngår i: International Journal of Innovation and Technology Management (IJITM), ISSN 0219-8770, Vol. 8, nr 2, s. 167-189Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper describes the information technology (IT) organization modeling and assessment tool (ITOMAT) and how it can be used for IT governance decision making. The ITOMAT consists of an enterprise architecture metamodel that describes IT organizations. Further, ITOMAT contains a Bayesian network for making predictions on how changes to IT organization models will affect the IT governance performance as perceived by business stakeholders. Thorough case studies at 20 different companies have been conducted in order to calibrate the network. Finally, the paper describes a case study where ITOMAT was used to analyze the future impact of two IT organization change scenarios in a medium-sized engineering company.

  • 118.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Wijkström, Hanna
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Model-based it governance maturity assessments with cobit2007Inngår i: Proceedings of the 15th European Conference on Information Systems, ECIS 2007, 2007, s. 1276-1287Konferansepaper (Fagfellevurdert)
    Abstract [en]

    IT governance is an executive level concern in many enterprises today, but a method for credible, reliable, and cost-efficient IT governance maturity assessment has been lacking. Control Objectives for Information and related Technology (Cobit) is best practice in the area, but the method requires an experienced analyst to perform the assessment and the provided analysis framework is vague and ambiguous. This paper presents a Cobit based method designed to overcome these featured problems. It comprises a modeling language for IT governance based on Cobit, and a transparent analysis framework which enables aggregation of single metrics into comprehensive maturity scores. The applicability was tested in a small case study. Results demonstrate that the method can be used to conduct time-efficient, valid and reliable IT governance maturity assessments without the help of an experienced analyst.

  • 119.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A Bayesian Network for IT Governance Performance Prediction2008Inngår i: Proceedings of the 10th International Con-ference on Electronic Commerce, 2008Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The goal of IT governance is not only to achieve internal efficiency in an IT organization, but also to sup-port IT‟s role as a business enabler. The latter is an ability of an organization here denoted as IT gover-nance performance. IT management cannot control the IT governance performance directly. Instead, their realm of control includes several IT governance maturity indicators such as the existence of different IT activities, documents, metrics and roles. Current IT governance frameworks are suitable for describing IT governance, IT-systems, and business processes, but lack the ability to predict how changes to the IT gover-nance maturity indicators affect the IT governance performance. This paper presents a Bayesian network for IT governance performance prediction. Bayesian networks are widely used for goal modeling and prediction in other research fields. Data from 35 case studies conducted in a variety of organizations has been used to determine the behavior of the network. An assumption on linearity is introduced in order to compensate for the limited amount of data, and the network learns using the proposed Linear Conditional Probability Matrix Generator. The resulting Bayesian network for IT governance performance prediction can be used to support IT governance decision-making.

     

  • 120.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    The Linear Conditional Probability Matrix Generator for IT governance performance prediction2008Inngår i: MSVVEIS 2008: MODELLING, SIMULATION, VERIFICATION AND VALIDATION OF ENTERPRISE INFORMATION SYSTEMS, SETUBAL: INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION , 2008, s. 170-179Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The goal of IT governance is not only to achieve internal efficiency in an IT organization, but also to support IT's role as a business enabler. The latter is here denoted IT governance performance, and cannot be controlled by IT management directly. Their realm of control includes IT governance maturity, indicated by e.g. different IT activities, documents, metrics and roles. Current IT governance frameworks are suitable for describing IT governance, but lack the ability to predict how changes to the IT governance maturity indicators affect the IT governance performance. This paper presents a Bayesian network for IT governance performance prediction, learned with experience from 35 case studies. The network learns using the proposed Linear Conditional Probability Matrix Generator. The resulting Bayesian network for IT governance performance prediction can be used to support IT governance decision-making.

  • 121.
    Simonsson, Mårten
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lindström, Åsa
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Nordström, Lars
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Grundbäck, John
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Wijnbladh, Olof
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Scenario-based evaluation of Enterprise Architecture: A top-down approach for chief information officer decision making2005Inngår i: 7th International Conference on Enterprise Information Systems, ICEIS 2005, Miami, FL, 2005, s. 130-137Konferansepaper (Fagfellevurdert)
    Abstract [en]

    As the primary stakeholder for the Enterprise Architecture, the Chief Information Officer (CIO) is responsible for the evolution of the enterprise IT system. An important part of the CIO role is therefore to make decisions about strategic and complex IT matters. This paper presents a cost effective and scenario-based approach for providing the CIO with an accurate basis for decision making. Scenarios are analyzed and compared against each other by Using a number of problem-specific easily measured system properties identified in literature. In order to test the usefulness of the approach, a case study has been carried out. A CIO needed guidance on how to assign functionality and data within four overlapping systems. The results are quantifiable and can be presented graphically, thus providing a cost-efficient and easily understood basis for decision making. The study shows that the scenario-based approach can make complex Enterprise Architecture decisions understandable for CIOs and other business-orientated stakeholders.

  • 122. Sinderen, Marten van
    et al.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Preparing the Future Internet for ad-hoc business networks support2012Inngår i: Architecture Modeling for the Future Internet enabled Enterprise (AMFInE) workshop, 2012Konferansepaper (Fagfellevurdert)
  • 123.
    Sommestad, Teodor
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A probabilistic relational model for security risk analysis2010Inngår i: Computers & security (Print), ISSN 0167-4048, E-ISSN 1872-6208, Vol. 29, nr 6, s. 659-679Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Information system security risk, defined as the product of the monetary losses associated with security incidents and the probability that they occur, is a suitable decision criterion when considering different information system architectures. This paper describes how probabilistic relational models can be used to specify architecture metamodels so that security risk can be inferred from metamodel instantiations. A probabilistic relational model contains classes, attributes, and class-relationships. It can be used to specify architectural metamodels similar to class diagrams in the Unified Modeling Language. In addition, a probabilistic relational model makes it possible to associate a probabilistic dependency model to the attributes of classes in the architectural metamodel. This paper proposes a set of abstract classes that can be used to create probabilistic relational models so that they enable inference of security risk from instantiated architecture models. If an architecture metamodel is created by specializing the abstract classes proposed in this paper, the instantiations of the metamodel will generate a probabilistic dependency model that can be used to calculate the security risk associated with these instantiations. The abstract classes make it possible to derive the dependency model and calculate security risk from an instance model that only specifies assets and their relationships to each other. Hence, the person instantiating the architecture metamodel is not required to assess complex security attributes to quantify security risk using the instance model.

  • 124.
    Sommestad, Teodor
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Combining defense graphs and enterprise architecture models for security analysis2008Inngår i: Proceedings - 12th IEEE International Enterprise Distributed Object Computing Conference, EDOC 2008, 2008, s. 349-355Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Security is dependent on a mixture of interrelated concepts such as technical countermeasures, organizational policies, security procedures, and more. To facilitate rational decision making, these concepts need to be combined into an overall judgment on the current security posture, as well as potential future ones. Decision makers are, however, faced with uncertainty regarding both what countermeasures that is in place, and how well different countermeasures contribute to mitigating attacks. This paper presents a security assessment framework using the Bayesian statistics-based Extended Influence Diagrams to combine attack graphs with countermeasures into defense graphs. The approach makes it possible to calculate the probability that attacks succeed based on an enterprise architecture model. The framework also takes uncertainties of the security assessment into consideration. Moreover, using the extended influence diagram formalism the expected loss from each attack can be calculated.

  • 125.
    Sommestad, Teodor
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Cyber Security Risks Assessment with Bayesian Defense Graphs and Architectural Models2009Inngår i: Proceedings of the 42nd Annual Hawaii International Conference on System Sciences, HICSS, x , 2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    To facilitate rational decision making regarding cyber security investments, decision makers need to be able to assess expected losses before and after potential investments. This paper presents a model based assessment framework for analyzing the cyber security provided by different architectural scenarios. The framework uses the Bayesian statistics based Extended Influence Diagrams to express attack graphs and related countermeasures. In this paper it is demonstrated how this structure can be captured in an abstract model to support analysis based on architectural models. The approach allows calculating the probability that attacks will succeed and the expected loss of these given the instantiated architectural scenario. Moreover, the framework can handle the uncertainties that are accompanied to the analyses. In architectural analysis there are uncertainties acquainted both to the scenario and its properties, as well as to the analysis framework that stipulates how security countermeasures contribute to cyber security.

  • 126.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Chen, David
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Barriers to Enterprise Interoperability2009Inngår i: ENTERPRISE INTEROPERABILITY, PROCEEDINGS / [ed] Poler R, VanSinderen M, Sanchis R, 2009, Vol. 38, s. 13-24Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Interoperability is a key feature for enterprises in today's competitive environment. Fundamental interoperability problems are however still not well understood. Within the scope of the Framework for Enterprise Interoperability (FEI) originally proposed by INTEROP NoE and now moved to ISO standardization process, this paper tentatively identifies and categorizes a set of interoperability barriers. Barriers to interoperability are defined as incompatibility between two enterprise systems. A list of interoperability barriers is presented and these barriers are then mapped to the FEI and illustrated with examples. The most significant dependencies between barriers are also tentatively defined and presented.

  • 127.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Franke, Ulrik
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Buschle, Markus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A Tool for Interoperability Analysis of Enterprise Architecture Models using Pi-OCL2010Inngår i: Enterprise interoperability iv: making the internet of the future for the future of enterprise, 2010, s. 81-90Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Decision-making on enterprise-wide information system issues can be furthered by the use of models as advocated by the discipline of enterprise architecture. In order to provide decision-making support, enterprise architecture models should be amenable to analyses. This paper presents a software tool, currently under development, for interoperability analysis of enterprise architecture models. In particular, the ability to query models for structural information is the main focus of the paper. Both the tool architecture and its usage is described and exemplified.

  • 128.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Empirical assessment of the accuracy of an interoperability prediction language2016Inngår i: Information Systems Frontiers, ISSN 1387-3326, E-ISSN 1572-9419, s. 1-15Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Interoperability, defined as the satisfaction of a communication need between two or more actors, is an important aspect in many phases of an enterprise’s development. Mastering the field of interoperability is a daunting task so aid in predicting interoperability can be of great benefit. Formalisms capable of such predictions of future information system architectures are however sparse, and when employed, it is essential that the prediction is accurate. In this paper, a previously proposed interoperability modelling and prediction language is subjected to case testing and evaluated toward interoperability predictions made by practitioners and experts in the field. The results show that although there are some areas not currently covered by the framework, in general, it performs better than the intended users, and would thereby provide additional support in various development and design contexts.

  • 129.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Predicting Interoperability in an Environmental Assurance System2012Inngår i: Enterprise Interoperability V: Shaping Enterprise Interoperability in the Future Internet / [ed] Raúl Poler, Guy Doumeingts, Bernhard Katzy, Ricardo Chalmeta, Springer London, 2012, s. 25-35Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Decision-making on issues related to interoperability can be furthered by the use of models of the organization or information system where interoperability is of concern. In order to provide decision-making support, the models should be amenable to analyses. This paper presents the application of a modeling languge for interoperability prediction to an environmental assurance system. Using the modeling language it was possible to predict the probability of success for the communication needs of the assurance system, and also identify the main barriers for these comunication needs.

  • 130.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Buschle, Markus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A language for interoperability modeling and prediction2012Inngår i: Computers in industry (Print), ISSN 0166-3615, E-ISSN 1872-6194, Vol. 63, nr 8, s. 766-774Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Interoperability, defined as the satisfaction of a communication need between two or more actors, is a sought after quality for enterprises in today's competitive environment. For a decision maker, understanding the effects of a changing market place and understanding how to adapt to the new environment is essential. Sustainable interoperability is an approach where such dynamic environments are considered, including how to adapt to the new environments. This paper presents a modeling language for describing architectures from an interoperability perspective and a formalism for inferring the degree of interoperability from the architecture models, thus supporting sustainable interoperability. The interoperability language is expressed as a Unified Modeling Language, UML, class diagram specifying classes, attributes, and relationships relevant for interoperability modeling. The class diagram is also augmented with a set of statements in the Object Constraint Language, OCL, supporting automated interoperability prediction.

  • 131.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Buschle, Markus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A Modeling Language for Interoperability Assessments2011Inngår i: ENTERPRISE INTEROPERABILITY / [ed] VanSinderen, M; Johnson, P, BERLIN: SPRINGER-VERLAG BERLIN , 2011, Vol. 76, s. 61-74Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Decision-making on issues related to interoperability can be furthered by the use of models of the organization or information system where interoperability is of concern. In order to provide decision-making support, the models should be amenable to analyses. This paper presents a modeling language specifically for interoperability issues where interoperability is defined as the probability that two more actors will be able to exchange information and use that information. The language is coupled with a probabilistic mechanism for automated interoperability assessments of the models created. The paper also presents an example of how the language can be applied.

  • 132.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Education in Enterprise Architecture Analysis: Assessing interoperability of service oriented architectures2009Konferansepaper (Fagfellevurdert)
  • 133.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    A Framework for Service Interoperability Analysis using Enterprise Architecture Models2008Inngår i: 2008 IEEE INTERNATIONAL CONFERENCE ON SERVICES COMPUTING, PROCEEDINGS, VOL 2, LOS ALAMITOS: IEEE COMPUTER SOC , 2008, s. 99-107Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Good IT decision making is a highly desirable property that can be furthered by the use of enterprise architecture, an approach to IT management using diagrammatic models. In order to support decision making, the models must be amenable to various kinds of analysis. It is desirable that the models support the sought after analysis effectively since creation of enterprise architecture models often is a demanding task. This paper suggests a framework for enterprise service interoperability analysis and a metamodel containing the information needed to perform the analysis. The paper also illustrates the use of the framework and metamodel in a fictional example.

  • 134.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Enterprise architecture - A service interoperability analysis framework2008Inngår i: ENTERPRISE INTEROPERABILITY III: NEW CHALLENGES AND INDUSTRIAL APPROACHES, NEW YORK: SPRINGER , 2008, s. 611-623Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Enterprise architecture is a model-based approach to IT management used for promotion of good IT decision making. Thus, an enterprise architecture framework needs to support various forms of analysis. Creation of enterprise architecture models is costly and without intrinsic value, therefore it is desirable to create models that effectively support the sought after analysis. This paper presents an extended influence diagram describing theory of enterprise service interoperability. The theory is augmented with a metamodel containing the information needed to perform analysis of interoperability. A fictional example is provided to illustrate the employment of the metamodel and the theory in the context of IT decision making.

  • 135.
    Ullberg, Johan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Sinderen, Marten van
    University of Twente.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Architecture Modeling for Interoperability Analysis on the Future Internet2013Inngår i: Enterprise Interoperability: I-ESA'12 Proceedings, 2013, s. 111-117Konferansepaper (Fagfellevurdert)
    Abstract [en]

    One of the key aspects of the Future Internet is the Internet of Services, where companies are envisioned to sell and purchase services online in a dynamic fashion. A typical future scenario would be that companies form so-called ad-hoc business networks on the Future Internet to be able to collaborate together with a common goal of gaining value as a group. However, in order for these ad-hoc business networks to communicate and exchange services with each other they must be interoperable. This paper proposes architecture modeling and interoperability analysis as support functions in the ad-hoc business networks service life cycle.

  • 136. Van Sinderen, M.
    et al.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Doumeingts, G.
    Computer in industry special issue on "interoperability and future internet for next-generation enterprises" editorial and state of the art2013Inngår i: Computers in industry (Print), ISSN 0166-3615, E-ISSN 1872-6194, Vol. 64, nr 8, s. 881-886Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    The 2013 Special Issue of Computers in Industry Journal describes papers on 'Interoperability and Future Internet for Next-Generation Enterprises' from the 3rd International IFIP Working Conference on Enterprise Interoperability. The first article, 'Towards a business model reference for interoperability services' by Otto, Ebner, Baghi, and Bittmann, addresses the lack of business models for enterprise interoperability. The next article, 'Structural elements of coordination mechanisms in collaborative planning process and their assessment through maturity models' by Cuenca, Boza, and Alemany, considers the maturity assessment of a specific kind of business-level enterprise interoperability, namely collaborative planning processes. An article by Coutinho, Cretan, and Jardim-Goncalves, titled 'Sustainable Interoperability on Space Mission Feasibility Studies,' proposes a framework for achieving sustainable interoperability covering both businesspeople aspects and technology aspects.

  • 137.
    Van Sinderen, Marten
    et al.
    University of Twente, Department of Electrical Engineering, Mathematics and Computer Science,.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Kutvonen, Lea
    University of Helsinki, Department of Computer Science.
    Report on the IFIP WG5.8 International Workshop on Enterprise Interoperability: IWEI 20082008Inngår i: SIGMOD record, ISSN 0163-5808, E-ISSN 1943-5835, Vol. 37, nr 4, s. 112-114Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    TheInternationalWorkshoponEnterpriseInteroperability(IWEI), organized by theIFIPWorking Group 5.8onEnterpriseInteroperability, was held in conjugation with the 12th IEEEInternationalEDOC Conference (EDOC 2008). The convention aimed to identify and discuss the challenges and solutions with respect toenterprise, both at business and the technical level. The selected papers were exhibited in three scheduled sessions, with the fourth session of open discussion on future challenges involving both the speaker and the participants. The first session was presented with a paper 'Framework forinteroperabilityanalysis on the semantic web using architecture models', which was claimed to be influenced by factors as compatibility, ontology completeness, and quality of formal denotation. The topic was discussed with respect to its various sub disciplines from computer science and business management.

  • 138.
    Vernotte, Alexandre
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Nätverk och systemteknik.
    Ekstedt, Mathias
    KTH, Skolan för elektro- och systemteknik (EES), Nätverk och systemteknik.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Nätverk och systemteknik.
    In-Depth Modeling of the UNIX Operating System for Architectural Cyber Security Analysis2017Inngår i: PROCEEDINGS OF THE 2017 IEEE 21ST INTERNATIONAL ENTERPRISE DISTRIBUTED OBJECT COMPUTING CONFERENCE WORKSHOPS AND DEMONSTRATIONS (EDOCW 2017) / [ed] Halle, S Dijkman, R Lapalme, J, Institute of Electrical and Electronics Engineers (IEEE), 2017, s. 127-136Konferansepaper (Fagfellevurdert)
    Abstract [en]

    ICT systems have become an integral part of business and life. At the same time, these systems have become extremely complex. In such systems exist numerous vulnerabilities waiting to be exploited by potential threat actors. pwnPr3d is a novel modelling approach that performs automated architectural analysis with the objective of measuring the cyber security of the modeled architecture. Its integrated modelling language allows users to model software and hardware components with great level of details. To illustrate this capability, we present in this paper the metamodel of UNIX, operating systems being the core of every software and every IT system. After describing the main UNIX constituents and how they have been modelled, we illustrate how the modelled OS integrates within pwnPr3d's rationale by modelling the spreading of a self-replicating malware inspired by WannaCry.

  • 139.
    Välja, Margus
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Korman, Matus
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Shahzad, Khurram
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Elkraftteknik.
    Integrated metamodel for security analysis2015Inngår i: 2015 48TH HAWAII INTERNATIONAL CONFERENCE ON SYSTEM SCIENCES (HICSS), IEEE Computer Society, 2015, s. 5192-5200Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper proposes a metamodel for analyzing security aspects of enterprise architecture by combining analysis of cybersecurity with analysis of interoperability and availability. The metamodel extends an existing attack graph based metamodel for cybersecurity modeling and evaluation, (PCySeMoL)-Cy-2, and incorporates several new elements and evaluation rules. The approach improves security analysis by combining two ways of evaluating reachability: one which considers ordinary user activity and another, which considers technically advanced techniques for penetration and attack. It is thus permitting to evaluate security in interoperability terms by revealing attack possibilities of legitimate users. Combined with data import from various sources, like an enterprise architecture data repository, the instantiations of the proposed metamodel allow for a more holistic overview of the threats to the architecture than the previous version. Additional granularity is added to the analysis with the reachability need concept and by enabling the consideration of unavailable and unreliable systems.

  • 140.
    Välja, Margus
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Österlind, Magnus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Iacob, Maria-Eugenia
    University of Twente, Enschede, Centre for Telematics and Information Technology.
    van Sinderen, Marten
    University of Twente, Enschede, Centre for Telematics and Information Technology.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Modeling and prediction of monetary and non-monetary business values2013Inngår i: 2013 17th IEEE International Enterprise Distributed Object Computing Conference (EDOC), IEEE , 2013, s. 153-158Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In existing business model frameworks little attention is paid to a thorough understanding of the perceived customer value of a business' offering as compared to competing offers. In this paper, we propose to use utility theory in combination with e3value models to address this issue. An actor's joint utility function specifies how much value the actor attaches to a given product or service's different qualities. Competing value offerings map to different points on the customer utility function, since they provide certain quantities of each quality. Since the customer can be expected to exhibit a utility maximizing behavior, his/her choices between offerings can be predicted. Thus, given the proposed utility extension, it becomes possible to quantitatively reason about the relative customer value of an offering compared to those of the competition. This, in turn, allows the optimization of price, the key ingredient in any business model.

  • 141.
    Österlind, Magnus
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Johnson, Pontus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Karnati, Kiran
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Lagerström, Robert
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Välja, Margus
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Enterprise Architecture Evaluation using Utility theory2013Inngår i: Proceedings 17th IEEE International Enterprise Distributed Object Computing Conference Workshops (EDOCW), IEEE Computer Society, 2013, s. 347-351Konferansepaper (Fagfellevurdert)
    Abstract [en]

    With the increase in the number of quality attributes (e.g. cost, availability, reusability), that are being considered in the process of enterprise architecture analysis, the decision maker needs a systematic way to balance these attributes against each other to obtain the best possible architecture. Utility theory addresses this need by providing methods for numerical representation of preferences of a stakeholder involved in a decision-making process. In this paper utility theory key concepts are explained with examples. The process of calculating the utility metric, which reflects stake holder's set of preferences to select the most preferred architecture scenario is explained. The paper provides an explanation of how utility theory can be applied in enterprise architecture models which are meta-object facility compliant. This paper concludes by an example comparing two quality attributes on two architecture scenarios using utility theory and calculating the decision maker's overall utility metric across both quality attributes is provided. This shows the applicability of utility theory on architecture scenario analysis with multiple quality attributes.

123 101 - 141 of 141
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