Chapter 1:  Introduction     1 1.1 How Patterns Are Used in this Book     3 1.2 Series Books That Cover Topics from the First Edition     4 1.3 How this Book Is Organized     6    Part I: Fundamentals     6       Chapter 3: Understanding Service-Orientation     6       Chapter 4: Understanding SOA     6       Chapter 5: Understanding Layers with Services and Microservices     6    Part II: Service-Oriented Analysis and Design     7       Chapter 6: Analysis and Modeling with Web Services and Microservices     7       Chapter 7: Analysis and Modeling with REST Services and Microservices     7       Chapter 8: Service API and Contract Design with Web Services     7       Chapter 9: Service API and Contract Design with REST Services and Microservices     7       Chapter 10: Service API and Contract Versioning with Web Services and REST Services     7    Part III: Appendices     7       Appendix A: Service-Orientation Principles Reference     7       Appendix B: REST Constraints Reference     7       Appendix C: SOA Design Patterns Reference     8       Appendix D: The Annotated SOA Manifesto     8 1.4 Page References and Capitalization for Principles, Constraints, and Patterns     8 Additional Information     9    Symbol Legend     9    Updates, Errata, and Resources (www.servicetechbooks.com)     9    Service-Orientation (www.serviceorientation.com)     10    What Is REST? (www.whatisrest.com)     10    Referenced Specifications (www.servicetechspecs.com)     10    SOASchool.com SOA Certified Professional (SOACP)     10    CloudSchool.com Cloud Certified Professional (CCP)     10    BigDataScienceSchool.com Big Data Science Certified Professional (BDSCP)     11    Notification Service     11 Chapter 2: Case Study Backgrounds     13 2.1 How Case Studies Are Used     14 2.2 Case Study Background #1: Transit Line Systems, Inc.     14 2.3 Case Study Background #2: Midwest University Association     15 PART I:  FUNDAMENTALSChapter 3:  Understanding Service-Orientation     19 3.1 Introduction to Service-Orientation     20    Services in Business Automation     21    Services Are Collections of Capabilities     22    Service-Orientation as a Design Paradigm     24    Service-Orientation Design Principles     26 3.2 Problems Solved by Service-Orientation     29    Silo-based Application Architecture     29    It Can Be Highly Wasteful     31    It’s Not as Efficient as It Appears     32    It Bloats an Enterprise     32    It Can Result in Complex Infrastructures and Convoluted Enterprise Architectures     33    Integration Becomes a Constant Challenge     34    The Need for Service-Orientation     34    Increased Amounts of Reusable Solution Logic     35    Reduced Amounts of Application-Specific Logic     36    Reduced Volume of Logic Overall     36    Inherent Interoperability     37 3.3 Effects of Service-Orientation on the Enterprise     38    Service-Orientation and the Concept of “Application”     38    Service-Orientation and the Concept of “Integration”     40    The Service Composition     42 3.4 Goals and Benefits of Service-Oriented Computing     43    Increased Intrinsic Interoperability     44    Increased Federation     46    Increased Vendor Diversification Options     47    Increased Business and Technology Domain Alignment     48    Increased ROI     48    Increased Organizational Agility     50    Reduced IT Burden     52 3.5 Four Pillars of Service-Orientation     54    Teamwork     54    Education     55    Discipline     55    Balanced Scope     55 Chapter 4:  Understanding SOA     59 Introduction to SOA     60 4.1 The Four Characteristics of SOA     61    Business-Driven     61    Vendor-Neutral     63    Enterprise-Centric     66    Composition-Centric     68    Design Priorities     69 4.2 The Four Common Types of SOA     70    Service Architecture     71    Service Composition Architecture     77    Service Inventory Architecture     83    Service-Oriented Enterprise Architecture     85 4.3 The End Result of Service-Orientation and SOA     86 4.4 SOA Project and Lifecycle Stages     91    Methodology and Project Delivery Strategies     91    SOA Project Stages     94    SOA Adoption Planning     95    Service Inventory Analysis     96    Service-Oriented Analysis (Service Modeling)     97       Step 1: Define Business Automation Requirements     99       Step 2: Identify Existing Automation Systems     99       Step 3: Model Candidate Services     100       Service-Oriented Design (Service Contract)     101    Service Logic Design     103    Service Development     103    Service Testing     103    Service Deployment and Maintenance     105    Service Usage and Monitoring     105    Service Discovery     106    Service Versioning and Retirement     106    Project Stages and Organizational Roles     107 Chapter 5:  Understanding Layers with Services and Microservices     111 5.1 Introduction to Service Layers     113    Service Models and Service Layers     113    Service and Service Capability Candidates     115 5.2 Breaking Down the Business Problem     115    Functional Decomposition     115    Service Encapsulation     116    Agnostic Context     117    Agnostic Capability     119    Utility Abstraction     120    Entity Abstraction     121    Non-Agnostic Context     122    Micro Task Abstraction and Microservices     123    Process Abstraction and Task Services     123 5.3 Building Up the Service-Oriented Solution     124    Service-Orientation and Service Composition     124    Capability Composition and Capability Recomposition     127       Capability Composition     129       Capability Composition and Microservices     130       Capability Recomposition     132    Logic Centralization and Service Normalization     134 PART II:  SERVICE-ORIENTED ANALYSIS AND DESIGNChapter 6:  Analysis and Modeling with Web Services and Microservices     139 6.1 Web Service Modeling Process     140    Case Study Example     141    Step 1: Decompose the Business Process (into Granular Actions)     142    Case Study Example     142    Step 2: Filter Out Unsuitable Actions     144    Case Study Example     145    Step 3: Define Entity Service Candidates     146    Case Study Example     146    Step 4: Identify Process-Specific Logic     149    Case Study Example     149    Step 5: Apply Service-Orientation     150    Step 6: Identify Service Composition Candidates     151    Case Study Example     151    Step 7: Analyze Processing Requirements     152    Case Study Example     152    Step 8: Define Utility Service Candidates     153    Case Study Example     154    Step 9: Define Microservice Candidates     154    Case Study Example     155    Step 10: Apply Service-Orientation     155    Step 11: Revise Service Composition Candidates     156    Case Study Example     156    Step 12: Revise Capability Candidate Grouping     157 Chapter 7:  Analysis and Modeling with REST Services and Microservices     159 7.1 REST Service Modeling Process     160    Case Study Example     162    Step 1: Decompose Business Process (into Granular Actions)     164    Case Study Example     164    Step 2: Filter Out Unsuitable Actions     165    Case Study Example     165    Step 3: Define Entity Service Candidates     166    Case Study Example     167    Step 4: Identify Process-Specific Logic     169    Case Study Example     169    Step 5: Identify Resources     170    Case Study Example     171    Step 6: Associate Service Capabilities with Resources and Methods     172    Case Study Example     173    Step 7: Apply Service-Orientation     174    Case Study Example     174    Step 8: Identify Service Composition Candidates     175    Case Study Example     175    Step 9: Analyze Processing Requirements     176    Case Study Example     177    Step 10: Define Utility Service Candidates (and Associate Resources and Methods)     178    Case Study Example     179    Step 11: Define Microservice Candidates (and Associate Resources and Methods)     180    Case Study Example     181    Step 12: Apply Service-Orientation     181    Step 13: Revise Candidate Service Compositions     181    Case Study Example     182    Step 14: Revise Resource Definitions and Capability Candidate Grouping     182 7.2 Additional Considerations     183    Uniform Contract Modeling and REST Service Inventory Modeling     183    REST Constraints and Uniform Contract Modeling     186    REST Service Capability Granularity     188    Resources vs. Entities     189 Chapter 8:  Service API and Contract Design with Web Services     191 8.1 Service Model Design Considerations     193    Entity Service Design     193    Utility Service Design     194    Microservice Design     196    Task Service Design     196    Case Study Example     198 8.2 Web Service Design Guidelines     208    Apply Naming Standards     208    Apply a Suitable Level of Contract API Granularity     210    Case Study Example     212    Design Web Service Operations to Be Inherently Extensible     212    Case Study Example     213    Consider Using Modular WSDL Documents     214    Case Study Example     214    Use Namespaces Carefully     215    Case Study Example     215    Use the SOAP Document and Literal Attribute Values     216    Case Study Example     217 Chapter 9:  Service API and Contract Design with REST Services and Microservices     219 9.1 Service Model Design Considerations     221    Entity Service Design     221    Utility Service Design     222    Microservice Design     223    Task Service Design     225    Case Study Example     226 9.2 REST Service Design Guidelines     231    Uniform Contract Design Considerations     231    Designing and Standardizing Methods     231    Designing and Standardizing HTTP Headers     233    Designing and Standardizing HTTP Response Codes     235    Customizing Response Codes     240    Designing Media Types     242    Designing Schemas for Media Types     244    Complex Method Design     246    Stateless Complex Methods     249       Fetch Method     249       Store Method     250       Delta Method     252       Async Method     254    Stateful Complex Methods     256       Trans Method     256       PubSub Method     257    Case Study Example     259 Chapter 10:  Service API and Contract Versioning with Web Services and REST Services     263 10.1 Versioning Basics     265    Versioning Web Services     265    Versioning REST Services     266    Fine and Coarse-Grained Constraints     266 10.2 Versioning and Compatibility     267    Backwards Compatibility     267       Backwards Compatibility in Web Services     267       Backwards Compatibility in REST Services     268    Forwards Compatibility     271    Compatible Changes     273    Incompatible Changes     275 10.3 REST Service Compatibility Considerations     276 10.4 Version Identifiers     279 10.5 Versioning Strategies     282    The Strict Strategy (New Change, New Contract)     282       Pros and Cons     283    The Flexible Strategy (Backwards Compatibility)     283       Pros and Cons     284    The Loose Strategy (Backwards and Forwards Compatibility)     284       Pros and Cons     284    Strategy Summary     285 10.6 REST Service Versioning Considerations     286 PART III:  APPENDICESAppendix A:  Service-Orientation Principles Reference     289Appendix B:  REST Constraints Reference     305Appendix C:  SOA Design Patterns Reference     317 What’s a Design Pattern?     318 What’s a Design Pattern Language?     320 Pattern Profiles     321 Appendix D:  The Annotated SOA Manifesto     367 The SOA Manifesto     368 The SOA Manifesto Explored     369    Preamble     370    Priorities     371    Guiding Principles     375 About the Author     383Index     384

Today's comprehensive guide to SOA design: core principles, new case studies, and detailed technology coverage Case studies demonstrate how real organizations have brought SOA principles and techniques to life using current products and technologiesIlluminates fundamental and advanced principles with 300+ images and diagramsExplores SOA design with the latest .NET, enterprise Java, and middleware technologiesWritten by Thomas Erl, the world's #1 service technology authorThe newest title in The Prentice Hall Service Technology Series from Thomas Erl

A thorough update, this Second Edition incorporate new SOA practices, technologies and strategies that have emerged and evolved over the decade since the First Edition was published. It contains dozens of new case study examples and over 300 up-to-date diagrams, illuminating the most important facets of creating, leveraging and sustaining contemporary SOA. It has been revised to address today's best practices for every key phase of the SOA delivery lifecycle, from analysis to design to governance. New areas of coverage include service inventories, SOA governance frameworks, and maintaining SOA vitality.