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Auflistung nach Schlagwort "Enterprise architecture"

1 - 10 von 10
  • Zeitschriftenartikel
    Concepts for Modeling Smart Cities
    (Business & Information Systems Engineering: Vol. 64, No. 3, 2021) Bastidas, Viviana; Reychav, Iris; Ofir, Alon; Bezbradica, Marija; Helfert, Markus
    The rapid increase and adoption of new Information Technologies (IT) in Smart Cities make the provision of public services more efficient. However, various municipalities and cities deal with challenges to transform and digitize city services. Smart Cities have a high degree of complexity where offered city services must respond to the concerns and goals of multiple stakeholders. These city services must also involve diverse data sources, multi-domain applications, and heterogeneous systems and technologies. Enterprise Architecture (EA) is an instrument to deal with complexity in both private and public organizations. The paper defines the concepts for modeling Smart Cities in ArchiMate, guided by a design-oriented research approach. Particularly, the focus of this paper is on the concepts for modeling city services and underlying information systems which are added to the EA metamodel. The metamodel is demonstrated in a real-world case and validated by Smart City domain experts. The findings suggest that these concepts are essential to achieve the Smart City strategy (e.g., city goals and objectives), as well as to meet the needs of different city stakeholders. Furthermore, an extension mechanism allows addressing the alignment of business and IT in complex environments such as Smart Cities, by adjusting EA metamodels and notations. This can help cities to design, visualize, and communicate architecture decisions when managing the transformation and digitalization of public services.
  • Zeitschriftenartikel
    Crossing the Line: Overcoming Knowledge Boundaries in Enterprise Transformation
    (Business & Information Systems Engineering: Vol. 57, No. 1, 2015) Abraham, Ralf; Aier, Stephan; Winter, Robert
    Enterprise transformations are fundamental changes in an organization. Such changes typically affect different stakeholder groups (e.g., program managers, business managers) that exhibit a significant diversity regarding their members’ knowledge, goals, and underlying assumptions. Yet, creating shared understanding among diverse stakeholder groups in transformations is a main antecedent for success. The paper analyzes which properties of enterprise architecture models contribute to syntactic, semantic, and pragmatic capacities which helps to create shared understanding among stakeholder groups involved in enterprise transformation. The differences among stakeholder groups are assessed through the lens of knowledge boundaries, and enterprise architecture models are assessed through the lens of boundary objects. A research model is developed and empirically tested that describes which boundary object properties are required to overcome three progressively complex knowledge boundaries – syntactic, semantic, and pragmatic. The findings show which boundary object properties contribute to a respective capacity needed to overcome each of the three knowledge boundaries. Specifically, the results show that for (1) a syntactic capacity, concrete and modular enterprise architecture (EA) models are helpful; (2) a semantic capacity, visual EA model properties are relevant, and (3) a pragmatic capacity, broad stakeholder participation is conductive.
  • Zeitschriftenartikel
    CURIE: Towards an Ontology and Enterprise Architecture of a CRM Conceptual Model
    (Business & Information Systems Engineering: Vol. 64, No. 5, 2022) Fernández-Cejas, Miguel; Pérez-González, Carlos J.; Roda-García, José L.; Colebrook, Marcos
    Companies face the challenge of managing customer relationships (CRM) in a context marked by a drastic digital transformation and unbridled evolution of consumer behavior, exacerbated by the COVID-19 pandemic. The customer is more demanding, has access to the global market and interacts with companies through multiple digital channels, such as email, social networks, mobile apps or instant messaging. In this situation, the success of a CRM implementation highly depends on information technology and the applications used. To harmonize this new business context with the development of information systems (IS), a suitable CRM ontology and enterprise architecture (EA) is needed. While an ontology-based conceptual model provides a unifying framework, aids sharing and reusing knowledge, and facilitates communication within a domain, an EA-based model unequivocally describes, analyzes, and visualizes how an organization should operate from the perspective of business, application, and technology. The purpose of the paper is the proposal of CURIE-O, a CRM OntoUML UFO-based ontology, together with CURIE-EA, a CRM ArchiMate-based EA to serve business managers and IS specialists an updated unifying framework of reference in the CRM domain as well as a highly efficient tool to support application development and maintenance in this changing and increasingly digital context. Modeling has proven to be an essential element to achieve high-performance information systems. In order to apply the ontology and the EA proposed here, the authors developed a CRM task management application prototype that was implemented as a case study in a consulting company. The methodology followed was design science research (DSR), in order to design and validate the artifacts. Within the DSR framework, other complementary research methods have been used, in particular literature research, interviews and focus groups carried out with several hotel chains in Tenerife (Canary Islands). The main existing CRM models in the scientific literature have also been analyzed together with the leading CRM market solutions.
  • Konferenzbeitrag
    Features of AI Solutions and their Use in AI Context Modeling
    (Modellierung 2022 Satellite Events, 2022) Rittelmeyer, Jack Daniel; Sandkuhl, Kurt
    Despite the implementation of many new artificial intelligence (AI)-based solutions in research and practice every year, companies still encounter problems while introducing AI solutions. One reason for that, from our own experience, are significant problems with understanding the concepts of AI. To cope with this problem, we aimed for developing a morphological box for AI solutions. The developed morphological box, its features and their values are based on four own industrial cases of AI solutions covering different application domains. We previously presented an enterprise architecture-based AI context model to help to better understand the context of an AI solution in a company and thereby minimize the risks of an implementation. We also analyzed that the morphological box supports the AI introduction process by improving and enhancing the three steps of the AI context model, which lead to more complete requirements for AI solutions.
  • Zeitschriftenartikel
    Maintenance of Enterprise Architecture Models
    (Business & Information Systems Engineering: Vol. 63, No. 2, 2021) Silva, Nuno; Sousa, Pedro; Mira da Silva, Miguel
    Enterprise architecture (EA) models are tools of analysis, communication, and support towards enterprise transformation. These models need a suitable maintenance process to support comprehensive knowledge of the enterprise’s structure and dynamics. This study aims to identify and discuss the existing approaches to EA model maintenance published in the scientific literature. A systematic literature review was employed as the research method. A keyword-based search in six databases identified a total of 4495 papers in which 31 primary studies were included. A total of nine categories of EA model maintenance approaches were identified from both information systems and enterprise engineering fields of research. The increasing amount of research in EA model maintenance suggests that the topic still presents opportunities for research contributions. This study also proposes future lines of research according to the results identified in the theoretical corpus.
  • Zeitschriftenartikel
    Optimierung von Unternehmensarchitekturen unter Berücksichtigung von Transitionskosten
    (HMD Praxis der Wirtschaftsinformatik: Vol. 55, No. 5, 2018) Hacks, Simon; Lichter, Horst
    Unternehmensarchitekturen, die sich üblicherweise von der Geschäftsschicht über die Anwendungsschicht bis zur Infrastrukturschicht erstrecken, bieten eine Möglichkeit, die Geschäftsstrategie innerhalb der IT umzusetzen. Um dies erreichen zu können, werden Unternehmensarchitekturen kontinuierlich gepflegt. Dazu gehört unter anderem, dass unnötige Elemente aus der Unternehmensarchitektur entfernt werden und diese somit optimiert wird. In einem vorangegangenen Artikel haben wir bereits untersucht, wie auf Basis der Repräsentation einer Unternehmensarchitektur als Graph eine Optimierung ermittelt werden kann. Dieser Ansatz unterscheidet allerdings nicht, ob die Elemente dem Ist-Zustand zuzurechnen sind oder ihr Einsatz bisher nur geplant ist. Dementsprechend werden auch die notwendigen Transitionskosten, um vom Ist-Zustand zum optimalen Zustand zu gelangen, nicht berücksichtigt. Dies kann zu unwirtschaftlichen Ergebnissen führen. In dieser Arbeit stellen wir deswegen eine Erweiterung unseres Ansatzes vor, der notwendige Transitionskosten berücksichtigt. Dafür betrachten wir den aktuellen Stand der Unternehmensarchitektur und weisen jeder Änderung daran die zugehörigen Transitionskosten zu. Diese werden gegen die Betriebskosten aufgewogen, was zu wirtschaftlicheren Optimierungslösungen führt. IT becomes more and more important for business in the last decades. Simultaneous, the IT pervades the business more and more and becomes ubiquitous. This raises also the complexity of the information systems and their interrelations. With rising complexity of the information systems it becomes harder to ensure the IT/business alignment. One way to achieve the IT/business alignment is EA (Enterprise Architecture). One goal of EA is, for example, to consolidate the IT landscape. In our previous research, we developed an approach to optimize an EA with the means of linear programming, which can be applied to consolidate the IT landscape. However, this approach does not consider transition costs and, therefore, might produce uneconomical results. Within this paper, we suggest an extension of our previous work introducing transition costs. To do so, we take the as-is EA into account and apply transition costs to changes which are outweighed against operation costs. This leads to more economical optimization results.
  • Zeitschriftenartikel
    Referenzarchitektur Cybersicherheit im Föderalsystem Deutschlands
    (HMD Praxis der Wirtschaftsinformatik: Vol. 61, No. 4, 2024) Rehbohm, Thomas; Sandkuhl, Kurt
    Cybersicherheitsarchitekturen sind im Föderalsystem Deutschlands elementarer Bestandteil der digitalen Daseinsvorsorge für Gesellschaft, Wirtschaft und Verwaltung. In Deutschland stehen neben dem Bund alle Länder vor vergleichbaren Herausforderungen, die Akteure ihrer Region dergestalt in eine Architektur einzubinden, dass eine gegenüber Cybersicherheitsbedrohungen resiliente IKT-Infrastruktur entsteht. Sofern die Länder eine harmonisierte Architektur implementiert haben, kann die Gesamtarchitektur im Binnenverhältnis der Länder in kooperativer und komplementärer Zusammenarbeit mit dem Bund und für Europa aufwachsen. Das Ziel der hier vorgestellten Forschungsarbeit ist es, die Verzahnung der systemrelevanten Akteure der regionalen und föderalen Cybersicherheit zu unterstützen und zu vereinfachen. Konkret werden dazu sowohl die inter-organisationalen Prozesse und davon betroffenen Rollen und Organisationseinheiten bei Land, Kommune und Unternehmen der Privatwirtschaft als auch gemeinsam nutzbare Komponenten einer Cybersicherheitsorganisation betrachtet und in Form einer Unternehmensarchitektur dokumentiert, die zu einer Referenzarchitektur weiterentwickelt werden soll. Die Modellierung der Referenzarchitektur in der Modellierungssprache ArchiMate wird in Auszügen vorgestellt. This article discusses cybersecurity architectures in the context of Germany’s federal system. The architecture presented are to become a fundamental component of the German and at the same time digital services of general interest for society, the economy and the administration. At the time when the hybrid threat situation and the supply of fossil fuels are a matter of constant debate in politics and the media, all of the German federal states face compareable challenges. The European Union, Germany and Germanys constituent the federal states have had to recognise how very fragile social and societal cohesion is. Bottlenecks, as they have become increasingly likely in electricity and gas supply, are transferable to ICT infrastructures. The aim of the cybersecurity architecture described here is to enable cybersecurity actors at the national and federal level to network more closely to strengthen resilience against threats. The architecture set out here will be further refined in an iterative evaluative manner and represents a federal solution to the challenges of the asymmetric threat landscape. Apart from a possible and future legal change in the distribution of competences in Germany, this research paper considers cybersecurity in the context of a distributed and federal structure.
  • Zeitschriftenartikel
    Representing Variability in Enterprise Architecture
    (Business & Information Systems Engineering: Vol. 61, No. 2, 2019) Rurua, Nino; Eshuis, Rik; Razavian, Maryam
    Organizations that operate on an international scale have a high variation of business operations, caused by country-specific regulations and compliance requirements. The differences in requirements lead to variability in the designed business processes and their supporting applications and infrastructure technology. Such variability should be represented in enterprise architectures, which are structures that align business operations to IT. However, current approaches to enterprise architecture are agnostic to variability. The paper presents an explorative case study, performed at an international high-tech company in the area of electronic invoicing, in which a solution for representing variability in enterprise architecture is designed. The developed solution has been validated by company experts.
  • Zeitschriftenartikel
    The Benefits of Enterprise Architecture in Organizational Transformation
    (Business & Information Systems Engineering: Vol. 62, No. 6, 2020) Niemi, Eetu; Pekkola, Samuli
    Today, as organizations constantly adjust their activities to meet ever-changing circumstances, continuous business transformation is taking place. However, planning and steering this transformation can be a daunting task as complexity has been built into the organization over the years. Enterprise Architecture (EA) has been widely adapted as a planning and governance approach to manage the complexity and constant change, and to align the organization toward a common goal. This article studies the EA benefit-realization process by clarifying how EA benefits are realized. Specifically, the focus is on the strategies, resources, and practices which the EA benefits stem from. The findings, derived from an in-depth case study, show that the EA benefit-realization process constitutes a long, intertwined chain of activities. Organizations benefit from EA through various means: from the initiation, when comprehensive understanding starts to form, until years later, when measurable outcomes such as cost savings materialize. Suggestions on what to incorporate into EA programs are presented.
  • Zeitschriftenartikel
    The Structuring of Enterprise Architecture Functions in Organizations
    (Business & Information Systems Engineering: Vol. 66, No. 4, 2024) Kotusev, Svyatoslav; Kurnia, Sherah; Dilnutt, Rod; van de Wetering, Rogier
    Enterprise architecture (EA) practice is a complex set of organizational activities enabling well-coordinated business and IT planning. Organizationally, EA practices are implemented by specialized EA functions, which have existed in many companies in some or the other form for decades. However, the problem of structuring EA functions according to the specific needs of organizations received almost no attention in the literature. To address this gap, 47 organizations and their EA functions were analyzed. Using the grounded theory method, the study develops a comprehensive theoretical model explaining the dependence between the relevant properties of organizations and the structures of their EA functions, including the appropriate numbers of architects, their specialization and structural alignment. This study offers arguably the first full-fledged theory on the structuring of EA functions and also addresses multiple practical questions that are likely to be asked by IT leaders willing to establish EA functions in their organizations.