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Fundamentals of Enterprise Architecture Management: Foundations for Steering the Enterprise-Wide Digital System

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This textbook provides a comprehensive, holistic, scientifically precise, and practically relevant description of Enterprise Architecture Management (EAM). Based on state-of-the-art concepts, it also addresses current trends like disruptive digitization or agile methods.

The book is structured in five chapters. The first chapter offers a comprehensive overview of EAM. It addresses questions like: what does EAM mean, what is the history of EAM, why do enterprises need EAM, what are its goals, and how is it related to digitalization? It also includes a short overview of essential EAM standards and literature. The second chapter provides an overview of Enterprise Architecture (EA). It starts with clarifying basic terminology and the difference between EA and EAM. It also gives a short summary of existing EA frameworks and methods for structuring the digital ecosystem into layers and views. The third chapter addresses the strategic and tactical context of the EAM capability in an enterprise. It defines essential terms and parameters in the context of enterprise strategy and tactics as well as the operative, organizational context of EAM. The fourth chapter specifies the detailed goals, processes, functions, artifacts, roles and tools of EAM, building the basis for an EAM process framework that provides a comprehensive overview of EAM processes and functions. Closing the circle, the last chapter describes how to evaluate EAM in an enterprise. It starts by laying out core terminology, like “metric” and “strategic performance measurement system” and ends with a framework that integrates the various measuring areas in the context of EA and EAM.

This textbook focuses on two groups: First, EAM scholars, ie bachelor or master students of Business Information Systems, Business Administration or Computer Science. And second, EAM practitioners working in the field of IT strategy or EA who need a reliable, scientifically solid, and practically proven state-of-the-art description of essential EAM methods.

Author(s): Jörg Ziemann
Series: The Enterprise Engineering Series
Publisher: Springer
Year: 2022

Language: English
Pages: 222
City: Cham

Foreword
Preface
Goals of the Book and Target Audience
Structure and Content of This Book
Contents
About the Author
List of Abbreviations
Chapter 1: EAM in a Nutshell
1.1 The Idea of EAM
1.2 Complexity Management as Core EAM Goal
1.2.1 Enterprise IT Landscapes Are Complex
1.2.2 Complexities´ Negative Impact at a Small Enterprise
1.2.3 Impact of Organic Growth in Large Enterprises
1.2.4 Complexity Reduces the Agility of the Digital Ecosystem
1.2.5 EAM Must Keep Complexity in Check
1.3 EAM Needs to Balance Local and Global Interests
1.4 EAM and Digitalization
1.5 First Synopsis of EAM Goals
1.6 Essential EAM Standards and Literature
Chapter 2: Enterprise Architecture in a Nutshell
2.1 Basic Terms
2.1.1 System, Architecture, and Related Terms
2.1.2 Model, Metamodel, and Reference Model
2.1.3 Enterprise Architecture and Related Terms
2.1.4 EA Framework and EAM Framework
2.2 Typical Layers of EA Frameworks
2.2.1 A Reference Framework for Enterprise Architecture
2.2.2 Core Layers of Enterprise Architecture Frameworks
2.2.3 Exemplary EA Layers in Literature
2.3 System Complexity Revisited
2.4 Core Principles for Architecting Socio-Technical Systems
2.4.1 Business and Digital Systems Follow the Same Structures
2.4.2 Hierarchical Layers in Social and Digital Systems
2.5 Parameters of the Enterprise-Wide Digital Ecosystem
2.5.1 Specialization, Generalization, and Reuse
2.5.2 Centralization vs. Decentralization
2.5.3 Standardization vs. Individualization
2.5.4 Integration vs. Autonomy
2.5.5 Further Parameters
Chapter 3: Strategic and Tactical Context of EAM
3.1 Introduction and Basic Terms
3.1.1 EAM Must Be Tailored to the Enterprise Context
3.1.2 Basic Terms
3.2 Parameters of Business Strategy and Operations
3.3 Parameters of Enterprise Architecture Management
3.3.1 Changing Focus of EAM: EAM, Quo Vadis?
3.3.2 EAM Stereotypes: Who Am I and How Many?
3.3.3 Collections of EAM Parameters
3.3.4 Additional Individual EAM Parameters
3.3.5 Synthesis of EAM Parameters
3.4 Structure and Capabilities of the IT Organization
3.4.1 Centralized or Decentralized Allocation of IT Functions
3.4.2 Managing Individual Elements and Portfolios
3.4.3 Standards for IT Capabilities: COBIT and ITIL
3.5 Capabilities in the Vicinity of EAM
3.5.1 IT Strategy and Governance Capabilities
3.5.2 Further Capabilities
Chapter 4: EAM Implementation
4.1 EAM Goals Revisited
4.2 EAM Process Framework
4.2.1 A Short Review of EAM Processes in Literature
4.2.2 The Essence of Architectural Work
4.2.3 The EAM Process Cube
4.3 EAM Artifacts
4.3.1 Baseline, Target, and Reference Architectures
4.3.2 Maps of the Digital Ecosystem
4.3.3 Enterprise Architecture Principles
4.3.4 Roadmaps, Strategies, and Standards
4.3.5 EAM Artifacts in the Context of Individual Solutions
4.4 EAM Tools
4.5 EAM Organization and Roles
4.5.1 EAM Roles
4.5.2 EAM Boards, Communities, and Committees
4.5.3 Allocation of the EAM Capability
4.6 EAM Processes and Capabilities
4.6.1 EAM Processes for Managing Digital Landscapes
4.6.2 EAM Processes in the Context of Individual Solutions
4.6.3 Processes to Enable and Support EAM
4.6.4 Processes for Managing EAM
Chapter 5: EAM Evaluation
5.1 Introduction
5.1.1 Basic Terms
5.1.2 Overview of Measuring Areas and Approaches
5.2 Evaluating Individual Systems
5.2.1 Classic Metrics for Digital Systems
5.2.2 Metrics for Individual Solutions in the Context of EAM
5.2.3 Metrics for the Management of Individual Systems
5.2.4 Evaluating Systems in Architecture Boards
5.2.5 Evaluating System Architectures
5.3 Evaluating the Enterprise Architecture
5.3.1 Overview of Enterprise Architecture Metrics
5.3.2 A Closer Look on Selected Metrics
5.3.3 Measuring All Architecture Domains of the Ecosystem
5.3.4 EA Metrics Must Be Adapted for Each Enterprise
5.4 Evaluating Enterprise Architecture Management
5.4.1 Introduction and Overview
5.4.2 A Short Review of EAM Maturity Models
5.4.3 Process- and Capability-Oriented Evaluation of EAM
5.4.4 Further Metrics for Evaluating EAM
5.5 Chapter Summary
References