PRINCIPLES OF ON DEMAND SYSTEMS: STUDIES IN SYSTEMS ORIENTEDARCHITECTURE Pubblico

Abstract

Abstract PRINCIPLES OF ON DEMAND SYSTEMS: STUDIES IN SYSTEMS ORIENTED ARCHITECTURE By: Sascha Vitzthum With the proliferation of Information and Communication Technologies (ICT) and the digitalization of information, services have permeated organizations and markets. Industries, public institutions, and enterprise are transforming into entities that provide on demand services to requesting entities. The dissertation examines the inherent principles of on demand systems. The studies represented in this research effort explore the presence and absence of several of the key principles underlying the on demand environment in order to understand and predict innovative directions in the migration toward, and beyond, on demand environments and future computing paradigms. The evidence gathered from the qualitative and quantitative studies suggest that the impact of on demand systems is contingent upon the technological and external environment in which the system is deployed.

Table of Contents

TABLE OF CONTENTS

CHAPTER I: INTRODUCTION.................................................................................................................1

CHAPTER II: PRINCIPLES OF ON DEMAND SYSTEMS ...................................................................5 INFORMATION SYSTEMS EVOLUTION ...................................................................................................8 ENVIRONMENTAL SHIFTS...................................................................................................................11 EVOLVING ON DEMAND SYSTEM PRINCIPLES....................................................................................14 SUMMARY..........................................................................................................................................19

CHAPTER III: ON DEMAND ARCHITECTURES AND SERVICE ORIENTATION .....................21 COMPONENTS OF SERVICE ORIENTED COMPUTING ............................................................................22 SERVICE ORIENTATION DESIGN PRINCIPLES ......................................................................................24 OVERARCHING PRINCIPLES ................................................................................................................29

CHAPTER IV: IMPACT OF SERVICE ORIENTATION ON THE ALIGNMENT OF IS ARCHITECTURE AND TURBULENT ENVIRONMENTS .................................................................32 INTRODUCTION....................................................................................................................................32 LITERATURE REVIEW.........................................................................................................................34 THEORETICAL MODEL........................................................................................................................51 RESEARCH DESIGN.............................................................................................................................57 EXPERIMENT I - SEPARATE EFFECTS OF IDIOSYNCRATIC CHARACTERISTICS.....................................64 EXPERIMENT II - SIMULTANEOUS EFFECTS .......................................................................................73 DISCUSSION OF LIMITATIONS.............................................................................................................80 SUMMARY..........................................................................................................................................81

CHAPTER V: INFORMATION DIFFUSION IN ON DEMAND NETWORKS .................................83 INTRODUCTION ..................................................................................................................................83 THEORETICAL BACKGROUND.............................................................................................................84 THEORETICAL MODEL........................................................................................................................90 RESEARCH DESIGN.............................................................................................................................98 DATA ANALYSIS ..............................................................................................................................101 DISCUSSION OF RESULTS .................................................................................................................106 DISCUSSION OF LIMITATIONS...........................................................................................................108 SUMMARY........................................................................................................................................109

CHAPTER VI: ON DEMAND SYSTEMS IN PRACTICE ..................................................................112 INTRODUCTION ................................................................................................................................112 CASE STUDY I: SKYPE SA................................................................................................................116 CASE STUDY II: CHEP.....................................................................................................................127 CASE STUDY III: UNMANNED SYSTEMS...........................................................................................137 SUMMARY........................................................................................................................................141

CHAPTER VIII: CONCLUSION AND FUTURE RESEARCH..........................................................144

APPENDIX A: CHEP...............................................................................................................................152 PART A: CHEP: THE NET OF THINGS .............................................................................................152 PART B: CHEP: TRACKING THE PROGRESS ....................................................................................173

APPENDIX B: SKYPE SA.......................................................................................................................179 PART A: EBAY'S ACQUISITION OF SKYPE SA: VALUING THE VOICE OF THE BUYER......................179 PART B: THE AFTERMATH OF THE ACQUISITION ............................................................................195

REFERENCES ..........................................................................................................................................207

TABLE OF FIGURES

FIGURE 1: IMPACT OF ENVIRONMENTAL DIMENSIONS ON THE SUCCESS OF ON DEMAND SYSTEMS ................4 FIGURE 2: EVOLUTION OF INFORMATION SYSTEMS........................................................................................11 FIGURE 3: TRANSACTION MODEL OF SERVICES .............................................................................................18 FIGURE 4: SUMMARY OF TRENDS AND EVOLVING PRINCIPLES ......................................................................20 FIGURE 5: BASIC RELATIONSHIP BETWEEN SERVICES, SERVICE ORIENTED ARCHITECTURE, AND SERVICE ORIENTATION ...............................................................................................................................23 FIGURE 6: INFLUENCE OF SOA DESIGN PRINCIPLES ON COMPONENT CHARACTERISTICS..............................29 FIGURE 7: INFLUENCE OF SOA DESIGN PRINCIPLES ON SYSTEM CHARACTERISTICS .....................................50 FIGURE 8: RESEARCH MODEL AND CONTEXT ................................................................................................57 FIGURE 9: INTERACTION MECHANISM............................................................................................................64 FIGURE 10: THE IMPACT OF DEGREES OF MODULARITY IN DIFFERENT DEGREES OF TURBULENCE...............66 FIGURE 11: THE IMPACT OF DEGREES OF COUPLING IN DIFFERENT DEGREES OF TURBULENCE ....................67 FIGURE 12: THE IMPACT OF DEGREES OF SYSTEM INTEROPERABILITY IN DIFFERENT DEGREES OF TURBULENCE.........................................................................................................................68 FIGURE 13: THE IMPACT OF DEGREES OF COUPLING IN DIFFERENT DEGREES OF TURBULENCE ....................70 FIGURE 14: THE IMPACT OF DEGREES OF IT COMPETENCE IN DIFFERENT DEGREES OF TURBULENCE...........71 FIGURE 15: SENSITIVITY ANALYSIS FOR THE MODULARITY PARAMETER - P VALUES BY DECILE ................79 FIGURE 16: SENSITIVITY ANALYSIS FOR THE MODULARITY PARAMETER - BETA VALUES BY DECILE ..........80 FIGURE 17: RESEARCH MODEL - INFLUENCE OF STRUCTURE PARAMETERS AND PROCESS VARIABLE ON THE OUTCOME OF THE ACM ......................................................................................................91 FIGURE 18: DIMENSIONS OF ON DEMAND SYSTEM SUCCESS .......................................................................114 FIGURE 19: DIMENSIONS OF THE EXTERNAL ENVIRONMENT........................................................................146 FIGURE 20: DIMENSIONS OF THE TECHNOLOGICAL ENVIRONMENT .............................................................149 FIGURE 21: ASSET FLOW AND PRICING MODEL ...........................................................................................160

TABLE OF TABLES TABLE 1: MODEL PARAMETERS, DEFINITION AND OPERATIONALIZATION.....................................................61 TABLE 2: PARAMETER VALUES FOR SEPARATE EXPERIMENTS......................................................................64 TABLE 3: OPTIMAL ISA CONFIGURATION FOR DIFFERENT DEGREES OF ENVIRONMENTAL TURBULENCE .....72 TABLE 4: SIMULATION PARAMETERS FOR SIMULTANEOUS EXPERIMENT.......................................................73 TABLE 5: DESCRIPTIVE STATISTICS................................................................................................................74 TABLE 6: CORRELATION MATRIX ..................................................................................................................75 TABLE 7: OLS REGRESSION RESULTS (ROBUST STANDARD ERRORS) ...........................................................76 TABLE 8: DEFINITION OF INDEPENDENT VARIABLES......................................................................................98 TABLE 9: MEANS OF VARIABLES (VARIANCE IN PARENTHESES)..................................................................102 TABLE 10: DISTRIBUTIONS OF NUMBER AND SIZE OF CULTURES.................................................................102 TABLE 11: REGRESSION RESULTS ................................................................................................................104

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School	Laney Graduate School
Department	Business
Degree	PhD
Submission	Dissertation
Language	English
Research Field	Business Administration, General
Parola chiave	Systems Oriented Architecture On Demand Systems
Committee Chair / Thesis Advisor	Konsynski, Benn, Emory University
Committee Members	Bharadwaj, Anandhi, Emory University Chellappa, Ramnath, Emory University

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