Model driven validation approach for enterprise architecture and motivation extensions

As the endorsement of Enterprise Architecture (EA) modelling continues to grow in diversity and complexity, management of its schema, artefacts, semantics and relationships has become an important business concern. To maintain agility and flexibility within competitive markets, organizations have also been compelled to explore ways of adjusting proactively to innovations, changes and complex events also by use of EA concepts to model business processes and strategies. Thus the need to ensure appropriate validation of EA taxonomies has been considered severally as an essential requirement for these processes in order to exert business motivation; relate information systems to technological infrastructure. However, since many taxonomies deployed today use widespread and disparate modelling methodologies, the possibility to adopt a generic validation approach remains a challenge. The proliferation of EA methodologies and perspectives has also led to intricacies in the formalization and validation of EA constructs as models often times have variant schematic interpretations. Thus, disparate implementations and inconsistent simulation of alignment between business architectures and heterogeneous application systems is common within the EA domain (Jonkers et al., 2003). In this research, the Model Driven Validation Approach (MDVA) is introduced. MDVA allows modelling of EA with validation attributes, formalization of the validation concepts and transformation of model artefacts to ontologies. The transformation simplifies querying based on motivation and constraints. As the extended methodology is grounded on the semiotics of existing tools, validation is executed using ubiquitous query language. The major contributions of this work are the extension of a metamodel of Business Layer of an EAF with Validation Element and the development of EAF model to ontology transformation Approach. With this innovation, domain-driven design and object-oriented analysis concepts are applied to achieve EAF model’s validation using ontology querying methodology. Additionally, the MDVA facilitates the traceability of EA artefacts using ontology graph patterns

A COMMITMENT-BASED REFERENCE ONTOLOGY FOR SERVICE: HARMONIZING SERVICE PERSPECTIVES

Nowadays, the notion of service has been widely adopted in the practice of economic sectors (e.g., Service, Manufacturing, and Extractive sectors), as well as, in the research focus of various disciplines (e.g., Marketing, Business, and Computer Science). Due to that, a number of research initiatives (e.g., service ontologies, conceptual models, and theories) have tried to understand and characterize the complex notion of service. However, due to particular views of these disciplines and economic sectors, a number of different characterizations of service (e.g., service as interaction, service as co-creation of value, and service as capability / manifestation of competence, among others) have been proposed. The existence of these various non-harmonized characterizations, and the focus on a terminological debate about the service concept, instead of about the service phenomena from a broad perspective, make the establishment of a unified body of knowledge for service difficult. This limitation impacts, e.g., the establishment of unified conceptualization for supporting the smooth alignment between Business and IT views in service-oriented enterprise architecture (SoEA), and the design and usage of service modeling languages. In this thesis we define a theoretical foundation for service based on the notion of service commitment and claims as basic elements in the characterization of service relations along service life-cycle phases (service offer, service negotiation, and service delivery). As discussed in this work, this theoretical foundation is capable of harmonizing a number of service perspectives found in the literature. Such theoretical foundation is specified in a well-founded core reference ontology, named UFO-S, which was designed by adopting a sound ontological engineering apparatus (mainly, a well-founded ontology representation language, OntoUML, and approaches of model verification and model validation). As a kind of theory, UFO-S was applied in the analysis of SoEA structuring principles in order to define a commitment-based SoEA view, which remarks social aspects inherent in service relations usually underexplored in widely adopted service-oriented approaches (such as SOA-RM by OASIS, ITIL, and ArchiMate). Based on this, UFO-S was also applied in an ontological analysis of service modeling at ArchiMates Business layer. Such ontological analysis showed some limitations concerned to semantic ambiguity and lack of expressiveness for representing service offerings (and type thereof) and service agreements in SoEA. In order to address these limitations, three service modeling patterns (service offering type pattern, service offering pattern, and service agreement pattern) were proposed taking as basis UFO-S. The usefulness of these patterns for addressing these limitations was evidentiated by means of an empirical evaluation. Finally, we can say that, beyond offering a broad and well-founded theoretical foundation for service able to harmonize service perspectives, UFO-S presented benefits as a reference model in the analysis of SoEA structuring principles, and in the (re)design of service modeling languages

Contextual Components of an Enterprise Architecture Framework for Pan-European eGovernment Services

Enterprise Architecture (EA) frameworks provide a wide range of architecture components. Contextual EA components provide the necessary guidance to design specific architectures in a given context e.g. for Pan-European Government Services (PEGS). Contextual EA components help to describe the background and scope of architecture work and provide a ground to tackle architecture challenges in an agreed way. The main contribution of this conceptual paper is to connect existing theoretical models as a basis to examine contextual components of an EA framework for PEGS. Three aspects are elaborated using a model-based approach: a Critical Success Factor Model, a Strategy Management Model and a Stakeholder Engagement Model. The identified models are aligned with EA standards and provide guidance to empirical research and to programs, projects and initiatives that wish to create interoperability architectures

Representing Organizational Structures in Enterprise Architecture: an Ontology-based Approach

Enterprise Architecture (EA) promotes the establishment of a holistic view of the structure and way of working of an organization. One of the aspects covered in EA is associated with the organizations active structure, which concerns who undertakes organizational activities. Several approaches have been proposed in order to provide a means for representing enterprise architecture, among which ARIS, RM-ODP, UPDM and ArchiMate. Despite the acceptance by the community, existing approaches focus on different purposes, have limitations on their conceptual scopes and some have no real world semantics well-defined. Besides modeling approaches, many ontology approaches have been proposed in order to describe the active structure domain, including the ontologies in the SUPER Project, TOVE, Enterprise Ontology and W3C Org Ontology. Although specified for semantic grounding and meaning negotiation, some of proposed approaches have specific purposes and limited coverage. In addition, some of them are not defined using formal languages and others are specified using languages without well-defined semantics. This work presents a well-founded reference ontology for the organizational domain. The organizational reference ontology presented covers the basic aspects discussed in the organizational literature, such as division of labor, social relations and classification of structuring units. Further, it also encompasses the organizational aspects defined in existing approaches, both modeling and ontology approaches. The resulting ontology is specified in OntoUML and extends the social concepts of UFO-C

Factors Affecting the Quality of Enterprise Architecture Models

We start our research by introducing the subject of Enterprise Architecture (EA), its content and purpose, as well as discussing what we mean by a ‘model’, and ‘quality’, building on concepts from semiotics and in particular on conceptual model quality. We set out to answer three questions. The first deals with how we measure the quality of a set of Enterprise Architecture models, and to answer this we produce a mathematical framework and then test it using a case study. This extends the conceptual model quality work done by Lindland and Krogstie into the realm of Enterprise Architecture, adding new aspects related to completeness of sets of models, modelling maturity as well as conditions for increasing quality. This incorporates mathematical concepts, including set theory and calculus, and proposes three specific metrics for the quality of sets of models (related to truthfulness, syntax and completeness). This uses a simple case study, based upon purely quantitative data, sampling the contents of an existing Enterprise Architecture repository. The second deals with how we measure the effectiveness of the language used in Enterprise Architecture models. We again use mathematical techniques to construct metrics, this time related to comprehension and utility: the former incorporating a triangulation technique based upon Kvanvig’s concept of moderate factivity of objectual understanding, and the latter being a more subjective measure (i.e. self-assessment). From these two metrics we provide a new conceptual visualisation of the effectiveness of language concepts. We then test this framework using a mixed-mode case study, carrying out 68 interviews, based mostly upon quantitative data again but with additional elements of qualitative data. Although the conceptual framework is independent of any particular language, in order to test it we actually need to select an Enterprise Architecture framework, or more specifically, the modelling language within such a framework; the framework we choose for this purpose is ArchiMate. Through the use of alternative modelling notations in the survey process, we gain insights not just into the understanding and utility of various ArchiMate concepts, as perceived by respondents, we also gain insights into the effect of understanding and utility of using the specific notation provided by ArchiMate through the use of differential analysis of the result sets thus obtained. The final question we address is more practically focused and deals with how we can specify and automate various kinds of changes to Enterprise Architecture models based upon the previous research. We construct a conceptual framework illustrating the kinds of transformations that may be required, given what we have learnt in the previous chapters, demonstrate that these can be deterministic and finally demonstrate, by use of a specific Enterprise Architecture modelling tool (BiZZdesign), that they can be implemented in software, and thus automated. vii In the course of our research, we deliver reusable methodologies and frameworks that will assist future researchers into Enterprise Architecture and related frameworks, as well as Enterprise Architecture practitioners

Digital Transformation in Norwegian Enterprises

This open access book presents a number of case studies on digital transformation in Norway, one of the fore-runners in the digital progress index established by the European Commission in 2020. They explore the process of adoption, diffusion and value generation from digital technologies, and how the use of different digital solutions has enabled Norwegian enterprises to digitally transform their operations and business models. The book starts with an introductory chapter summarizing a vast body of literature in order to synthesize what is already known about digital transformation before exploring the Norwegian context in more detail. Then a series of case studies from the private and public sector in Norway is presented. They document a process perspective which describes the sequence of events during and after adoption of digital solutions, as well as the types of business value that were realized. Through these single studies, the process of digital transformation is illustrated, a number of key findings highlighted, and eventually theoretical and practical recommendations based on these cases emphasized. The book closes with a brief overview of some emerging technologies, and comments on how they are likely to change different sectors. Digital transformation has been one of the priority areas for the Norwegian government over the past years and puts Norwegian enterprises upfront in adopting novel technologies and utilizing them for achieving organizational goals. This experience accumulated over the years makes the Norwegian context a particularly interesting one in understanding how private and public organizations make use of new digital solutions, what lessons can be learnt during the process, and what are some of the key success and failure factors. This way the book is written for practitioners who are currently involved in digital transformation projects in their organizations, researchers of information systems and management, as well as master students in degrees of informatics and technology management

Enterprise modelling framework for dynamic and complex business environment: socio-technical systems perspective

The modern business environment is characterised by dynamism and ambiguity. The causes include global economic change, rapid change requirements, shortened development life cycles and the increasing complexity of information technology and information systems (IT/IS). However, enterprises have been seen as socio-technical systems. The dynamic complex business environment cannot be understood without intensive modelling and simulation. Nevertheless, there is no single description of reality, which has been seen as relative to its context and point of view. Human perception is considered an important determinant for the subjectivist view of reality. Many scholars working in the socio-technical systems and enterprise modelling domains have conceived the holistic sociotechnical systems analysis and design possible using a limited number of procedural and modelling approaches. For instance, the ETHICS and Human-centred design approaches of socio-technical analysis and design, goal-oriented and process-oriented modelling of enterprise modelling perspectives, and the Zachman and DoDAF enterprise architecture frameworks all have limitations that can be improved upon, which have been significantly explained in this thesis. [Continues.