PRINCIPLES OF ON DEMAND SYSTEMS: STUDIES IN SYSTEMS ORIENTED ARCHITECTURE Open Access

Vitzthum, Sascha (2009)

Permanent URL: https://etd.library.emory.edu/concern/etds/0z708x182?locale=en
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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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