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Event-Driven Architecture: How SOA Enables the Real-Time Enterprise

Book Description

Improving Business Agility with EDA

Going beyond SOA, enterprises can gain even greater agility by implementing event-driven architectures (EDAs) that automatically detect and react to significant business events. However, EDA planning and deployment is complex, and even experienced SOA architects and developers need expert guidance. In Event-Driven Architecture, four leading IT innovators present both the theory of EDA and practical, step-by-step guidance to implementing it successfully.

The authors first establish a thorough and workable definition of EDA and explore how EDA can help solve many of today’s most difficult business and IT challenges. You’ll learn how EDAs work, what they can do today, and what they might be able to do as they mature. You’ll learn how to determine whether an EDA approach makes sense in your environment and how to overcome the difficult interoperability and integration issues associated with successful deployment. Finally, the authors present chapter-length case studies demonstrating how both full and partial EDA implementations can deliver exceptional business value. Coverage includes

  • How SOA and Web services can power event-driven architectures

  • The role of SOA infrastructure, governance, and security in EDA environments

  • EDA core components: event consumers and producers, message backbones, Web service transport, and more

  • EDA patterns, including simple event processing, event stream processing, and complex event processing

  • Designing flexible stateless events that can respond to unpredictable customers, suppliers, and business partners

  • Addressing technical and business challenges such as project management and communication

  • EDA at work: real-world applications across multiple verticals

  • Hugh Taylor is a social software evangelist for IBM Lotus Software. He coauthored Understanding Enterprise SOA and has written extensively on Web services and SOA. He holds an MBA from Harvard Business School. Angela Yochem is an executive in a multinational technology company and is a recognized thought leader in architecture and large-scale technology management. Les Phillips, VP, enterprise architecture, at SunTrust Banks Inc., is responsible for defining the strategic and business IT foundation for many areas of the enterprise. Frank Martinez, EVP, product strategy, at SOA Software, is a recognized expert on distributed, enterprise application, and infrastructure platforms. He has served as senior operating executive for several venture-backed firms and helped build Intershop Communications into a multibillion-dollar public company.

    Foreword     xi

    Preface     xii

    Introduction      1

    Event-Driven Architecture: A Working Definition     1

    The “New” Era of Interoperability Dawns     6

    The ETA for Your EDA     9

    Endnotes     9


    Chapter 1 EDA: Opportunities and Obstacles     13

    The Vortex     13

    EDA: A Working Systemic Definition     14

    The (Not So Smooth) Path to EDA     24

    Defining Interoperability     26

    Drivers of Interoperability     28

    Application Integration: A Means to Interoperate     29

    Interoperation and Business Process Management     31

    Is There a Diet for All This Spaghetti?      35

    How Architecture Promotes Integration     37

    Management and Governance     39

    Chapter Summary     43

    Endnote     45

    Chapter 2 SOA: The Building Blocks of EDA     47

    Making You an Offer You Can’t Understand     47

    SOA: The Big Picture     48

    Defining Service     49

    Service-Based Integration     50

    Web Services     51

    What Is SOA?      59

    Loose Coupling in the SOA     60

    Chapter Summary     61

    Chapter 3 Characteristics of EDA     63

    Firing Up the Corporate Neurons     63

    Revisiting the Enterprise Nervous System     63

    The Ideal EDA     78

    BAM--A Related Concept     86

    Chapter Summary     87

    Endnotes     89

    Chapter 4 The Potential of EDA     91

    Introduction     91

    EDA’s Potential in Enterprise Computing     91

    EDA and Enterprise Agility     100

    EDA and Society’s Computing Needs     102

    EDA and Compliance     107

    Chapter Summary     108

    Chapter 5 The SOA-EDA Connection     111

    Getting Real     111

    Event Services     112

    The Service Network     114

    Implementing the SOA and Service Network     116

    How to Design an SOA     122

    The Real “Bottom Line”      134

    Chapter Summary     137


    Chapter 6 Thinking EDA     141

    A Novel Mind-Set     141

    Reducing Ce