Pandemic

Cover......Page 1 Contents......Page 14 Forewords......Page 22 Preface......Page 26 Acknowledgments......Page 28 About the Authors......Page 30 developerWorks and SOA......Page 32 Chapter 1 Introducing SOA......Page 34 1.1 SOA to the Rescue......Page 36 1.2.1 The Term “SOA”......Page 37 1.2.2 Dimensions of SOA......Page 38 1.3 A Preview of the Service-Oriented Architecture Compass......Page 40 1.5 References......Page 42 Chapter 2 Explaining the Business Value of SOA......Page 44 2.1 The Forces of Change......Page 45 2.1.1 Enterprise Reconstruction......Page 46 2.1.2 Industry Deconstruction......Page 47 2.1.3 The Impact of the Enterprise Reconstruction and Industry Deconstruction Trends......Page 48 2.2.1 What Is SOA?......Page 49 2.2.3 What Benefits Will Businesses Receive if They Implement SOA?......Page 50 2.2.5 What Is Different with SOA Compared to Previous Approaches?......Page 51 2.2.6 Rethinking Components for Business and Applications......Page 52 2.2.7 When Not to Implement an SOA......Page 53 2.3.1 Explaining SOA to Business People......Page 54 2.3.2 A Checklist for Business Change Agility......Page 55 2.4 The Nine Business Rules of Thumb for SOAs......Page 64 2.6 References......Page 65 Chapter 3 Architecture Elements......Page 68 3.1.1 Platform......Page 70 3.1.3 Protocols......Page 71 3.1.7 Service Versioning......Page 72 3.1.8 Service Model......Page 73 3.2 Infrastructure Services......Page 74 3.2.2 Service-Level Automation and Orchestration......Page 75 3.3 The Enterprise Service Bus (ESB)......Page 76 3.3.2 Quality-of-Service-Based Routing......Page 78 3.3.3 Mediation......Page 79 3.4.1 Industry Models......Page 80 3.4.2 Platform-Independent Realization......Page 81 3.4.3 Platform-Specific Realization......Page 82 3.4.5 Services Integration on the WebSphere Application Server......Page 83 3.4.6 The Information Management Domain......Page 86 3.5 The IBM On Demand Operating Environment......Page 90 3.6 Summary......Page 93 3.8 References......Page 94 4.1 Organizing Your SOA Project Office......Page 96 4.2 SOA Adoption Roadmap......Page 98 4.3.1 SOA Governance Motivation and Objectives......Page 101 4.3.3 Strategic Direction and SOA Governance Principles......Page 102 4.3.5 Managing the Risk of an SOA Roadmap......Page 103 4.3.6 SOA Governance Processes......Page 105 4.3.7 Launching the Governance Model......Page 106 4.3.8 Hints and Tips for Success......Page 107 4.4.3 Business Exceptions Monitoring and Handling......Page 108 4.5.1 The Function of Roles......Page 109 4.5.4 Examining and Adapting Roles......Page 110 4.5.5 A Look at Existing Roles......Page 111 4.5.6 A Look at New Roles......Page 112 4.5.7 Integrating Existing and New Roles......Page 114 4.6. Summary......Page 115 4.8 References......Page 117 5.1 Service-Oriented Analysis and Design......Page 118 5.1.2 Layers of Abstraction......Page 119 5.1.3 Reuse......Page 122 5.1.4 Service Encapsulation......Page 123 5.1.5 Loose-Coupling......Page 124 5.1.6 Strong Cohesion......Page 125 5.1.8 Well-Designed Services......Page 127 5.2.1 Identifying Services......Page 128 5.2.3 Specification of Services......Page 130 5.2.4 Realization of Services......Page 131 5.4 Links to developerWorks......Page 132 5.5 References......Page 133 Chapter 6 Enterprise Solution Assets......Page 136 6.1.2 Formalizing Architectural Decisions......Page 137 6.1.4 Performing the Product and Package Mappings......Page 138 6.3 A Catalog of Enterprise Solution Assets......Page 139 6.4 How Does an ESA Solve Enterprise Problems?......Page 140 6.7.1 Problem Synopsis......Page 141 6.7.2 Context......Page 142 6.7.4 Solution......Page 143 6.7.5 Consequences......Page 147 6.8.1 Problem Synopsis......Page 148 6.8.3 Forces......Page 149 6.8.4 Solution......Page 150 6.8.5 Consequences......Page 152 6.11 References......Page 153 7.1 Business Constraints......Page 156 7.2 Technology Constraints......Page 157 7.2.1 Operating Environment Constraints......Page 159 7.3.1 Performance NFRs......Page 160 7.3.3 Transactional Integrity NFRs......Page 163 7.4.1 Manageability NFRs......Page 164 7.4.3 Disaster-Recovery NFRs......Page 165 7.7 References......Page 166 8.1 Architectural Considerations for an SOA Security Model......Page 168 8.2.2 Confidentiality......Page 170 8.2.4 Message Authentication......Page 171 8.2.6 Authorization......Page 172 8.2.8 Non-Repudiation......Page 174 8.2.9 Cryptography......Page 175 8.2.10 Trust......Page 176 8.3.2 Defining Transport Security Policies......Page 177 8.3.3 Defining Message Layer Security Policies......Page 178 8.3.5 Defining Security Token Policies......Page 179 8.4 Standards and Mechanisms for SOA Security......Page 180 8.4.1 The Basic Security Standard: WS-Security......Page 181 8.4.3 Federated Security: WS-Federation......Page 183 8.4.4 Session Management: WS-SecureConversation......Page 184 8.4.5 Authorization and Policies: WS-Policy......Page 185 8.5.1 Implementing Basic Security Services......Page 186 8.5.2 Implementing Point-of-Contact Services......Page 187 8.5.5 Implementing a Federation......Page 188 8.6.1 The Performance Impact of Security......Page 189 8.6.2 Managing Security......Page 190 8.7.2 Web Services Layer Point of Contact......Page 191 8.8 Summary......Page 192 8.10 References......Page 193 9.1 Distributed Service Management and Monitoring Concepts......Page 196 9.1.2 Levels of SOA-Driven Management......Page 197 9.2 Key Services Management Concepts......Page 200 9.2.1 Managing the Enterprise Service Bus......Page 201 9.3 Operational Management Challenges......Page 202 9.3.1 Challenges with Respect to Management Perspectives......Page 203 9.3.2 Phases of Deployment......Page 204 9.4 Service-Level Agreement Considerations......Page 205 9.5.1 Business Performance and Business Service Management......Page 206 9.5.2 IT Application and Resource Management......Page 207 9.5.3 Other Areas of Management......Page 209 9.7 Links to developerWorks......Page 211 9.8 References......Page 212 10.1 Case Study: SOA in the Insurance Industry......Page 214 10.1.2 Solution Implementation......Page 215 10.1.3 Impact of the Project......Page 219 10.1.4 Lessons Learned......Page 221 10.2.1 IT and Business Challenges......Page 222 10.2.3 Impact of the Project......Page 223 10.2.4 Lessons Learned......Page 225 10.3 Summary......Page 226 11.1 What We Learned......Page 228 11.2 Guiding Principles......Page 230 11.3 Future Directions......Page 231 11.3.4 Open Development Platforms......Page 232 11.3.8 Event-Driven Architectures......Page 233 11.4 Summary......Page 234 11.5 Links to developerWorks......Page 235 A......Page 236 B......Page 237 C......Page 238 E......Page 239 I......Page 241 J......Page 242 M......Page 243 O......Page 244 R......Page 246 S......Page 247 W......Page 249 X......Page 252 A......Page 254 C......Page 255 E......Page 256 H-I......Page 257 L......Page 258 N......Page 259 P......Page 260 Q-R......Page 261 S......Page 262 W......Page 264 X......Page 265