The Service-Oriented Enterprise : Learn Enterprise Architecture and Its Viable Services

A service-oriented architecture is fundamental to many new IT applications, from web development to social software and cloud computing. The same principles can be applied to every aspect of the service-oriented enterprise – not just in IT. In this book, you’ll explore how an enterprise architecture and viable services can link together to create a simpler yet far more powerful view of the enterprise, as a dynamic, unified whole. You can use the ideas, principles and methods described here in business transformation, workflow mapping, system design and much else besides, in every type of enterprise - including those in which there may be little or no IT at all. Step by step, you’ll walk through the basics of service-oriented architectures, the four key categories of services and how they connect, and how all of this comes together in real-world service design, implementation and operations. From this, you’ll discover how to identify and describe the different types of services that you need for your enterprise, and how to distinguish between the services that you can safely outsource, versus those that you do need to keep in-house. By the end of this book, you’ll learn how to construct function models and service models of your enterprise as a base for service-mapping, and how to pinpoint and map the information flows you need for service-management and service-performance, to keep everything on-track to purpose. What You'll Learn See how an enterprise architecture can work as a literal architecture Understand Stafford Beer’s "Viable System Model" and adapt it as a robust model Study how a Viable Services Model provides a template for service design that covers functionals, non-functionals and operational governance for services Who This Book Is For Enterprise architects, Business architects, Service designers, Workflow designers Table of Contents About the Author About the Technical Reviewers Acknowledgments Introduction Part I: Basics – An Overview Chapter 1: Basics – Enterprise Architecture The Scope of Enterprise Architecture The Purpose of Enterprise Architecture Into Practice Summary Chapter 2: Basics – Service-Oriented Architecture Security and Other Service Challenges Services and Service-Management Everything Is a Service Into Practice Summary Chapter 3: Basics – A Matter of Metaphor Structural Basis Location of Purpose Structure of Management Emphasis for Overall Improvement Resilience and Change Services in the Living Enterprise Into Practice Summary Part II: Principles – An Overview Chapter 4: Principles – The Structure of Services Service Relationships Services As Viable Systems Into Practice Summary Chapter 5: Principles – Delivery Services Viable System Context Enterprise Context Subunits or Variants External Delivery (Value Chain) Internal Delivery (Support Services) Infrastructure Services Interfaces Into Practice Summary Chapter 6: Principles – Management Services Viable System Context Enterprise Context Subunits or Variants Policy, Purpose, and Identity Strategy and Situational Awareness (“Outside/Future”) Direction and Guidance (“Inside/Now”) Overall Interaction Interfaces Into Practice Summary Chapter 7: Principles – Coordination Services Viable System Context Enterprise Context Subunits or Variants Develop the Business Change the Business Run the Business Interfaces Into Practice Summary Chapter 8: Principles – Pervasive Services Viable System Context Enterprise Context Subunits or Variants Interfaces Into Practice Summary Chapter 9: Principles – Properties and Patterns Service Quality Service Interdependence Service Completeness Into Practice Summary Part III: Practice – An Overview Chapter 10: Practice – Service Purpose Practice Themes: Enterprise As a Service Practice Themes: Stakeholders Practice Themes: Stakeholder Imbalance Practice Themes: Vision and Values Practice Themes: Policies and Constraints The Structure of Purpose Practice Themes: Vision, Role, Mission, Goal Practice Themes: Mission and Service Practice Themes: Mission, Goal, and Metrics Practice Themes: Staying on Purpose Summary Chapter 11: Practice – Services and Functions The Functional Business Model Creating a Function Model Practice Themes: Tier-1 Functions Practice Themes: Tier-2 Functions Practice Themes: Tier-3 Functions Practice Themes: Tier-4 Functions Verifying a Function Model Practice Themes: Verifying a Function Model Function Model Examples Summary Chapter 12: Practice – The Knowledge of Services Practice Themes: Identifying Business Systems Practice Themes: Identifying Single-Source-of-Truth The Value of Services Practice Themes: Function-Model Overlays Verifying Viability Practice Themes: Viable Relations Practice Themes: Viable Communications Summary Chapter 13: Practice – Services in Action Practice Themes: Process-Choreography – Processes Practice Themes: Process-Choreography – Services Breaking Free from IT-Based Assumptions Practice Themes: Challenging IT-Centrism Practice Themes: Consultancy As a Service Summary Chapter 14: Practice – Optimizing Services Application Themes: Audit to Improve Improvement and Optimization Application Themes: Lessons-Learned Optimization and Engagement Application Themes: Architecture Engagement Summary Appendix A: Glossary Appendix B: Resources Books Online Resources Index A service-oriented architecture is fundamental to many new IT applications, from web development to social software and cloud computing. The same principles can be applied to every aspect of the service-oriented enterprise not just in IT. In this book, youll explore how an enterprise architecture and viable services can link together to create a simpler yet far more powerful view of the enterprise, as a dynamic, unified whole. You can use the ideas, principles and methods described here in business transformation, workflow mapping, system design and much else besides, in every type of enterprise - including those in which there may be little or no IT at all. Step by step, youll walk through the basics of service-oriented architectures, the four key categories of services and how they connect, and how all of this comes together in real-world service design, implementation and operations. From this, youll discover how to identify and describe the different types of services that you need for your enterprise, and how to distinguish between the services that you can safely outsource, versus those that you do need to keep in-house. By the end of this book, youll learn how to construct function models and service models of your enterprise as a base for service-mapping, and how to pinpoint and map the information flows you need for service-management and service-performance, to keep everything on-track to purpose. You will: See how an enterprise architecture can work as a literal architecture Understand Stafford Beers "Viable System Model" and adapt it as a robust model Study how a Viable Services Model provides a template for service design that covers functionals, non-functionals and operational governance for services. -- Provided by publisher