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

✍ Scribed by Tom Graves

• Publisher: Apress
• Tongue: English
• Leaves: 242
• Category: Library

✦ Synopsis

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

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