Executing SOA: A Practical Guide for the Service-Oriented Architects Book

Foreword xv

Acknowledgments xvii

About the Authors xix

Chapter 1 Introducing SOA 1

1.1 SOA in Retrospect 2

1.2 New Items to Consider 4

1.3 What Makes This Book Different? 6

1.4 Who Is This Book For? 6

1.5 What Is Covered in This Book? 7

1.6 Links to developerWorks Articles 8

1.7 References 8

Endnotes 8

Chapter 2 Unveiling the Benefits 9

2.1 Why the Business Should Care About SOA 9

2.2 Architecture 13

2.3 Focus on Business Architecture 14

2.4 Business Process 15

2.5 Business Components 16

2.6 Lifting the Veil 17

2.7 Link to developerWorks Article 18

2.8 References 18

Endnotes 18

Chapter 3 SOA Governance 21

3.1 Governance of the SOA Strategy 23

3.2 Organizing for SOA 32

3.3 SOA Governance Considerations 35

3.4 Conclusion 55

3.5 Links to developerWorks Articles 56

3.6 References 56

Endnotes 56

Chapter 4 A Methodology for Service Modeling and Design 57

4.1 An SOA Reference Architecture 58

4.2 Service Oriented Modeling and Architecture 62

4.3 Conclusion 80

4.4 Links to developerWorks Articles 80

4.5 References 81

Chapter 5 Leveraging Reusable Assets 83

5.1 What Is an Asset? 83

5.2 Service Reuse 84

5.3 What Makes an SOA Service Reusable? 84

5.4 Reusable Patterns 87

5.5 Making Legacy Reusable: Harvesting Reusable Components from a

Legacy Monolithic Application 91

5.6 Conclusion 99

5.7 Links to developerWorks Articles 99

5.8 References 100

Chapter 6 Realization of Services 103

6.1 Realizing the SOA Lifecycle 104

6.2 Premodeling Activities in an SOA 104

6.3 Modeling Services in an SOA 108

6.4 Assembling Services in an SOA 121

6.5 Deploying Services in an SOA 124

6.6 Managing Services in an SOA 126

6.7 The SOA Programming Model 134

6.8 Architecture and Design Considerations 139

6.9 Conclusion 144

6.10 Links to developerWorks Articles 144

6.11 References 145

Chapter 7 Information Services 147

7.1 Data or Information Services 147

7.2 Data, SOA, and Loose Coupling 148

7.3 From Data Sources to Consumers 150

7.4 Qualities of Data 152

7.5 Data Processes 153

7.6 Data Service Provider Logic Patterns 154

7.7 Composite Service Logic 159

7.8 Semantic Interoperability 160

7.9 Conclusion 162

7.10 Links to developerWorks Articles 162

7.11 References 163

Chapter 8 Collaboration Under SOA: The Human Aspects 165

8.1 What Does SOA Mean to People? 165

8.2 Web 2.0 and SOA 169

8.3 Building the SOA Collaboration Environment 179

8.4 Benefits from SOA to Enterprise Operations 182

8.5 Conclusion 186

8.6 Links to developerWorks Articles 186

8.7 References 187

Endnotes 188

Chapter 9 The Future of SOA 189

9.1 Composite Business Services and Composite Applications 190

9.2 Standardization of Industry Models and Industry-Wide SOA Enablement 190

9.3 Packaged Applications Mutating to Point Solutions 191

9.4 Hybrid Architectural Approach of SOA and EDA 192

9.5 SOA Methodology Evolution 192

9.6 Business Processes and SOA Not Without People 193

9.7 SOA Metrics 1939.8 Ubiquitous SOA in the Enterprise 194

9.9 Global Use of SOA 195

9.10 SOA Opens the Amateur Software Services Market 195

9.11 Conclusion 196

9.12 Links to developerWorks Articles 197

9.13 References 197

Endnotes 197

Index 199