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100 SOA Questions: Asked and Answered

100 SOA Questions: Asked and Answered


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About the Book

100 SOA Questions brings together authoritative answers to the most crucial questions business, technical, and architectural decision-makers ask about SOA. It draws on the immense experience of two SOA experts who’ve participated in more than 100 SOA projects in the roles of architect, designer, consultant, technical manager, and strategist.   Organized to reflect the Open Group’s Open Services Integration Maturity Model (OSIMM), this book provides fast, convenient access to information about all facets of SOA planning, implementation, management, and utilization.   This book will be an invaluable resource for all executives, architects, and practitioners who have just started their SOA journey or are well underway.   In-depth answers to questions about SOA topics such as • SOA Concepts and Planning • Business Strategy • Organization and Support • Governance • Methods and Techniques • Applications • Architecture • Information Management • Infrastructure • The Future of SOA   100 SOA Questions answers the most critical questions executives and practitioners have about SOA. Kerrie Holley and Dr. Ali Arsanjani draw on their unsurpassed experience from hundreds of SOA projects conducted worldwide.   • Why should business stakeholders care about SOA? • What is the return on investment (ROI) of SOA adoption? • What is flexibility and how does SOA deliver on this promise? • Should service development be centralized in service centers? • How should services be identified or specified to maximize reuse? • How do SOA methods reduce the lifetime costs for applications? • How can organizational barriers to SOA success be removed? • What changes with application development when SOA is introduced? • How does architecture change as a result of SOA adoption? • What is a canonical message model? • How does the SOA infrastructure support events? • What are context-aware services?

Table of Contents:
Preface      xvii Introduction     1   Chapter 1: SOA Basics     5 SOA Basics: Q&A     5   1. What Is SOA?     5   2. Is SOA an Architectural Style?     7   3. What Are the Fundamental Constructs (the DNA) of SOA?     9   4. What Is the Difference Between a Web Service and an SOA Service?     14   5. What Makes a Project an SOA Implementation?     15 SOA Basics: Key Concepts     16   Chapter 2: Business     19 Business: Q&A     21   6. Why Should Business Stakeholders Care About SOA?    21   7. How Should SOA Be Sold to the Business or Business Stakeholder?     25   8. What Is the Return on Investment (ROI) of SOA Adoption?     28   9. How Should the Business Measure the Effectiveness of SOA?     29   10. What Are the Criteria for Selecting a Project for SOA Adoption?     33   11. What Is Flexibility and How Does SOA Deliver on This Promise?     34   12. How Is Reuse Accomplished Using SOA?     36   13. What Should the Business or Business Stakeholders Do Differently Because of SOA?     37   14. Can SOA Be Applied to Business Architecture or Should It Be Used Solely for IT?     40   15. What Are the Common Pitfalls from a Business Vantage Point in Adopting SOA?     42 Business: Key Concepts     43   Chapter 3: Organization     45 Organization: Q&A     46   16. How Does Business / IT Alignment Change Because of SOA?     46   17. Which Joint Business / IT Processes Change Because of SOA?     49   18. What Organization Structures Should Be Established for SOA?     50   19. What Is the Role of Organizational Change Management to SOA?     56   20. How Can Organizational Barriers to SOA Success Be Removed?     58   21. How Should Organizations Address Funding for Services?     59   22. How Should Organizations Address Prioritization for Shared Services?     63   23. What Are Service Owners?     64   24. What is the Value of Classifying Services?     65   25. Who Owns Service Reuse?     66   26. What Are the Common Organizational Pitfalls When Adopting SOA?     67 Organization: Key Concepts     68   Chapter 4: Governance     71 Governance: Q&A     72   27. What Is SOA Governance?     72   28. How Does an Organization Get Started with SOA Governance?     75   29. What Is the Role of Change Management?     79   30. Does Implementation of SOA Tools and Infrastructure Equate to SOA Governance?     81   31. Should Service Development Be Centralized in Service Centers?      83   32. Does SOA Require Centers of Excellence, Architecture Boards, or Design Boards?     84   33. Why Do Organizations Need to Focus on SOA Governance When There Is an Effective Enterprise Architecture Activity?      87   34. Is SOA Governance Required for SOA Projects to Be Successful?     89   35. How Can You Measure Whether SOA Governance Is Effective?     90   36. What Is the Difference Between Design-Time and Runtime Governance?     91   37. What Are Common Pitfalls of SOA Governance?     92 Governance: Key Concepts     93   Chapter 5: Methods     95 Methods: Q&A     96   38. Should an Organization Continue to Use Agile or Object Development Methods for SOA Projects?       96   39. What Changes in System Development Result from SOA?     98   40. Does SOA Require Service Modeling?     101   41. How Should Services Be Identified or Specified to Maximize Reuse?      103   42. How Should the Granularity of a Service Be Determined?     106   43. Should SOA Be Used Only for Custom Development Projects?     107   44. Are Any New Development Roles Introduced by SOA Methods?     109   45. Does SOA Change Testing Methods?     110   46. How Do SOA Methods Accelerate Application Development?     112   47. How Do SOA Methods Reduce the Lifetime Costs for Applications?     114   48. What Are the Common Pitfalls in Adopting SOA Methods?     115 Methods: Key Concepts     116   Chapter 6: Applications    119 Applications: Q&A    121   49. Do Applications Still Exist with SOA?     121   50. Do Applications Get Replaced with Composite Services/Applications?     121   51. Is a Certain Type of Business Problem Best Suited for SOA Adoption?     123   52. Is a Certain Type of IT Problem Best Suited for SOA Adoption?     127   53. What Changes with Application Development When SOA Is Introduced?     128   54. What Is the Relationship of Business Process Management to an Application?     133   55. How Does SOA Make Applications or a Portfolio of Applications More Flexible?     137   56. Should an Application Portfolio Be Managed Differently Because of SOA Adoption?     139   57. Can Existing Systems or Legacy Applications Be Leveraged When Adopting SOA?     140   58. How Are Services Built That Will Deploy in a Cloud?     142   59. Does It Make Sense to Adopt SOA for One Application Versus the Enterprise?     143   60. What Are Common Pitfalls for Application Teams Adopting SOA?     144 Applications: Key Concepts     145   Chapter 7: Architecture     147 Architecture: Q&A     149   61. How Does Architecture Change as a Result of SOA Adoption?     149   62. How Does SOA Differ from Earlier Approaches, such as DCE or CORBA?     156   63. How Do Web Services and SOA Differ?     157   64. Is SOA Too Complex and Enterprise-Level Only?     158   65. How Do Interfaces and Contracts Differ?     160   66. Should Applications Choose WSDL or REST?     162   67. What Is the Relationship Between Enterprise Architecture and SOA?     165   68. How Do EAI, SOA, and SOI Differ from One Another?     167   69. What Is the Role of Standards in SOA Implementations?     168   70. How Should Standards Be Applied to Enable Successful SOA Implementations?     169   71. What Are the Common Pitfalls When Adapting an IT Architecture for SOA?     170 Architecture: Key Concepts      172   Chapter 8: Information     173 Information: Q&A     174   72. What Is the Relationship Between Information Architecture and SOA?     174   73. What Are Information Services?     175   74. How Are Information Services Classified?     176   75. Do Information Services Differ from Other Services?     178   76. How Should Information Services Be Identified?     180   77. When Should Information Services Perform Create, Read, Update, and Delete (CRUD) Operations?      181   78. Are Enterprise Information Models Required for Effective SOA Implementations?     182   79. What Is a Canonical Message Model?     184   80. How Should a Canonical Message Model Be Created?     186   81. Can SOA Improve Data Quality?     187   82. What Are the Common Pitfalls with Information Architecture and SOA?     188 Information: Key Concepts     189   Chapter 9: Infrastructure     191 Infrastructure: Q&A     193   83. What Are the Building Blocks of an SOA Infrastructure?     193   84. What is an Enterprise Service Bus?     199   85. What Are Best Practices for Creating the SOA Infrastructure?     200   86. What Makes an Enterprise Service Bus Different from Integration Technology?     201   87. How Does an ESB and Registry Relate?     203   88. How Does an SOA Infrastructure Support Events?     204   89. How Does the SOA infrastructure Evolve to Realize the Increased Loose Coupling?     205   90. How Does SOA Infrastructure Support Policy Management?     209   91. How Is Management of the Infrastructure Affected by SOA?     212   92. What Is the Role of Cloud Computing in an SOA Infrastructure?     213   93. What Are the Common Pitfalls in Creating an SOA Infrastructure?     214 Infrastructure: Key Concepts     217   Chapter 10: The Future of SOA     219 Future: Q&A     220   94. Is SOA Dead, Stagnant, or Moving Forward in its Adoption?    220   95. What Is the Future Trajectory of SOA?     221   96. What Are Context-Aware Services?     224   97. What Role Does SOA Play in Embedded or Real-Time Systems?     225   98. What Is the Relationship Between Event-Driven Architecture and SOA?     225   99. How Does the Slow Maturation of Standards Affect the Future of SOA?     227   100. Do WOA and Web 2.0 Affect the Future of SOA?     228 Future: Key Concepts     229   Index     231  

About the Author :
Kerrie Holley has a wealth of experience in application development, software engineering, systems engineering, IT consulting, and enterprise architecture. Mr. Holley has operated as Chief Architect, Strategist, Consultant, and Designer on more than fifty SOA projects. In his current role, he oversees hundreds of SOA projects in their technical direction, strategy, and successful deployment. Mr. Holley’s current focus is on the convergence of business rules, business process management, analytics, and SOA in making businesses more agile. Mr. Holley holds several SOA patents and has a BA in mathematics from DePaul University and a Juris Doctorate degree from DePaul School of Law. Mr. Holley has worked in a senior capacity for several companies, including Bank of America, Tandem Computers, Ernst & Young and is currently an IBM Fellow.   Dr. Arsanjani is a rare mix of industry hands-on consulting and academic research that he leverages in his Chief Technology Officer role as advisor to high-profile companies. Through his experience as strategist, consultant, and architect, he has helped companies achieve business performance through leveraging and changing IT. His current area of focus is to enable companies to achieve higher levels of business performance and enable them to optimize their business through the agility gained in concert with IT and business operations. Ali Arsanjani has chaired standard bodies such as The Open Group and is responsible for co-leading the SOA Reference Architecture, SOA Maturity Model, and Cloud Computing Architecture standards. In his role as Chief Architect, he and his team specialize in harvesting and developing best-practices for the modeling, analysis, design, and implementation of SOA and Web Services on hundreds of projects.   He is a hands-on, sought-after architect around the world on large SOA projects, and he is the principal author of the industry first Service-Oriented Modeling and Architecture (SOMA) method for SOA. His work on variation-oriented analysis allows companies to build less software but achieve higher gains, and his patterns for service- oriented software architecture combine SOA with business process management, business rules, and analytics to achieve higher levels of maturity for organizations.


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Product Details
  • ISBN-13: 9780132119771
  • Publisher: Pearson Education (US)
  • Publisher Imprint: Pearson
  • Language: English
  • Sub Title: Asked and Answered
  • ISBN-10: 0132119773
  • Publisher Date: 04 Nov 2010
  • Binding: Digital download
  • No of Pages: 271
  • Weight: 1 gr


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