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Event-Driven Architecture: How SOA Enables the Real-Time Enterprise, by Hugh Taylor, Angela Yochem, Les Phillips, Frank Martinez
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Improving Business Agility with EDA
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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.
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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
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- 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.
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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
�
PART I THE THEORY OF EDA
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
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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
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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
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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
�
PART II EDA IN PRACTICE
Chapter 6 Thinking EDA���� 141
A Novel Mind-Set���� 141
Reducing Central Control���� 142
Thinking about EDA Implementation���� 148
When EDA Is Not the Answer���� 151
An EDA Product Examined���� 153
Chapter Summary���� 157
Endnotes���� 158
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Chapter 7 Case Study: Airline Flight Control���� 159
Learning Objectives���� 160
Business Context: Airline Crunch Time���� 160
The Ideal Airline Flight Control EDA���� 167
What FEDA Might Look Like in Real Life���� 176
Program Success���� 197
Chapter Summary���� 206
Endnotes���� 207
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Chapter 8 Case Study: Anti-Money Laundering���� 209
Learning Objectives���� 210
Cracking a Trillion Dollar, Global Crime Wave���� 210
IT Aspects of Anti-Money Laundering���� 216
EDA as a Weapon in the War on Money Laundering���� 221
Chapter Summary���� 259
Endnotes���� 260
�
Chapter 9 Case Study: Event-Driven Productivity Infrastructure���� 261
Learning Objectives���� 262
The Often Inadequate Human Link in the EDA���� 262
Overview of Productivity Infrastructure���� 264
The Potential Benefits of EDA-PI Integration���� 267
ProdCo, an EDA-PI Integration Scenario���� 273
Chapter Summary���� 293
Endnotes���� 294
- Sales Rank: #1875839 in Books
- Published on: 2009-02-27
- Original language: English
- Number of items: 1
- Dimensions: 9.00" h x .80" w x 7.00" l, 1.16 pounds
- Binding: Paperback
- 272 pages
From the Back Cover
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 PART I THE THEORY OF EDA 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 PART II EDA IN PRACTICE Chapter 6 Thinking EDA 141 A Novel Mind-Set 141 Reducing Central Control 142 Thinking about EDA Implementation 148 When EDA Is Not the Answer 151 An EDA Product Examined 153 Chapter Summary 157 Endnotes 158 Chapter 7 Case Study: Airline Flight Control 159 Learning Objectives 160 Business Context: Airline Crunch Time 160 The Ideal Airline Flight Control EDA 167 What FEDA Might Look Like in Real Life 176 Program Success 197 Chapter Summary 206 Endnotes 207 Chapter 8 Case Study: Anti-Money Laundering 209 Learning Objectives 210 Cracking a Trillion Dollar, Global Crime Wave 210 IT Aspects of Anti-Money Laundering 216 EDA as a Weapon in the War on Money Laundering 221 Chapter Summary 259 Endnotes 260 Chapter 9 Case Study: Event-Driven Productivity Infrastructure 261 Learning Objectives 262 The Often Inadequate Human Link in the EDA 262 Overview of Productivity Infrastructure 264 The Potential Benefits of EDA-PI Integration 267 ProdCo, an EDA-PI Integration Scenario 273 Chapter Summary 293 Endnotes 294
About the Author
Hugh Taylor is a social software evangelist for IBM Lotus Software. Previously, he worked at SOA Software and Microsoft. He is the author of The Joy of SOX: Why Sarbanes Oxley and Service-Oriented Architecture May Be the Best Thing That Ever Happened to You and coauthor of Understanding Enterprise SOA. He is a lecturer at UC Berkeley’s School of Information and a frequent presenter at technology industry conferences. Hugh earned his BA and MBA from Harvard College.
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Angela Yochem is an executive in a multinational technology company and is a thought leader in architecture practices and large-scale technology management. Angela has held senior leadership roles in Fortune 50 companies where she drove technology transformation based on business objectives. Prior to her executive roles, Angela specialized in design and delivery of large-scale distributed systems and solutions to complex integration and convergence challenges. She has extensive B2B and B2C commerce implementation experience, with a foundation in systems design and network design and management of multicampus networks. Angela is the author of J2EE and WebLogic Server, 2 nd Edition and is an IASA Fellow and an US Patent holder. Angela serves on executive boards and is a regular speaker at events and forums in the United States and abroad.
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Les Phillips is a VP of enterprise architecture at SunTrust Banks Inc. Leveraging more than 15 years of industry experience, Les lays out the strategic and business foundation for many enterprise areas. Throughout his career Les has applied smart strategies and inventive ideas on pressing business objectives in fields such as supply chain, telecommunications, banking, retail, and education. He’s passionate when discussing his business transformation experience. Focusing on enterprise concerns and event-driven analytics, Les inspires and effectively helps businesses transform their DNA to achieve their market potential and performance goals. A longtime cyberspace veteran, Les specializes in system integration. He has enabled numerous Fortune 500 businesses to expand their awareness by integrating their systems with the outside world. On these engagements, he led many initiatives to maximize current IT investments by exposing their inherent strengths as business services. Les combines his skills with a twist of logic and a dash of creativity to form mouthwatering architectural cocktails.
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Frank Martinez is a recognized expert in the area of distributed, enterprise application, and infrastructure platforms. Mr. Martinez is focused on driving development of scalable service-oriented infrastructure software that integrates business processes and information enterprisewide. Mr. Martinez’s reputation as a technological visionary is demonstrated by his record of bringing innovative and commercially successful software solutions to market. He has had operating roles as a senior executive of several VC-backed firms and was instrumental in building Intershop Communications into a multibillion dollar public company in less than three years. Mr. Martinez was recently named an InfoWorld Innovator by InfoWorld magazine and has also been named one of 25 leading IT innovators by CRN.
Excerpt. � Reprinted by permission. All rights reserved.
Preface Preface About This Book
As professionals in the enterprise architecture field, we have observed the recent and spectacular rise of the concept of Service-Oriented Architecture (SOA) with excitement tempered by concern. The new standards-based architectural paradigm promises great advances in interoperability amongst previously incompatible software applications. In turn, it has the potential to deliver gains in agility and IT cost control. Perhaps most exciting, though, is the potential for SOA to make possible the realization of Event-Driven Architecture (EDA), an approach to enterprise architecture that yields a high level of agility by increasing systems’ awareness and intelligent responses to relevant events.
At the same time, it became clear to us that the steps required to design and deploy an EDA, or an SOA, its master set of architectural characteristics, were far from obvious. Even going beyond the fact that the technology and standards are immature and thus challenging, the practice of , uniting software with an overarching standards-based approach that extends outside the enterprise is a new field, lacking in many of the guiding principles of infrastructure, governance, and best practices that hold together most traditional forms of architecture and development.
For better or worse, some software vendors are now bringing what they call EDA suites to market. However, the commercial offerings in EDA tend to be quite narrowly defined and vendor-centric. As such, they are inadequate on their own to offer much in the way of instruction on the overall best practices required for EDA.
We perceive a need amongst architects for a book that combines both the theory of EDA - the grand vision that lead to its formation and the essential nature of the paradigm – with a practical look at building an EDA over an SOA implementation in the real world. This book is neither all theory nor all practice. It is a blend, with the idea that true success with EDA depends on a good understanding of both aspects of the paradigm.
To understand how this book is set up and what it contains, we thought it would make sense first to take a quick look at the definition, history, and context of EDA and SOA. These two related architectural styles are not as new as they seem, though recent developments in standards have lead to breakthroughs in their potential realization.
Inside This Book: The Path to EDA
Even for a lot of experienced architects and developers, the implicit connection between EDA and SOA has not been intuitively obvious. A lot of IT pros react to SOA with a sentiment akin to, “That’s really cool. Now what?” These questions are completely legitimate. Imagine someone handing you a violin and declaring, “Oh, good, now I get to hear Mozart.” That person is making several assumptions, including that you know what the violin is, how to play it and how to play Mozart in particular. In many IT situations, it is not always evident how loose coupling and a service-orientation will take you to an EDA. If your boss drops a VisualStudio.Net pack on your desk and says, “Now you will deliver an EDA,” you may not necessarily know how to get from here to there. That is purpose of this book.
Much of this book is dedicated to helping you understand where the rubber meets the road in turning the vision of EDA into a reality. In so doing, we will delve into detail on the subject of SOA, providing the essential building blocks of the most versatile and effective EDAs. We will address one of the great unanswered questions posed in the wake of SOA’s high profile arrival on the IT scene: How do you actually get to the achievement of business goals that EDA enables using the actual technologies that comprise SOA? The leap from Web services and SOA to the fulfillment of EDA, and its attendant agility and IT cost savings requires some serious discipline.
Part I – The Theory of EDA
This book consists of two parts. Part I, The Theory of EDA, covers the theoretical aspects of EDA. The path to EDA, which we will guide you through in this book, starts with an understanding of what EDA is. Part I begins with a thorough theoretical definition of EDA. We will cover the core components of EDA, such as event consumers and producers, message backbones, web service transport and so on. We will also describe the basic patterns of EDA, including Simple Event Processing, Event Stream Processing, and Complex Event Processing.
From this definition, we will then explore the current context of EDA, which is the jungle of interoperability challenges that we all face in large enterprises. Having thus set up the situation that we face: we want EDA (or at least, we should consider it), we see how difficult it can be to attain. Enter SOA, and its open interoperability, which paves the way for the realization of EDA.
In addition to defining EDA, we will explore the SOA-EDA connection in depth. In our view, any serious attempt to develop an EDA today will rely on the use of SOA technology as they are emerging in the marketplace. The EDA of tomorrow will run on Web Services and Enterprise Service Buses. The EDA components – the event producers, consumers, and processors, will all be Web Services. We will flesh out this vision of EDA.
The conclusion of Part I will consist of examples of EDAs and how they might function. We will explore examples of how businesses and other organizations might ideally use EDA to further their objectives. This set of examples will provide a transition to Part II of the book, which moves you into the reality of EDA and how it might be approached in an actual enterprise setting.
Part II – EDA in Practice
Part II begins with Chapter 6, Thinking EDA. This chapter explores ways to identify the ideal use of an EDA, or a partial EDA in realizing a set of business objectives. Chapters 7 and beyond present a set of case studies of EDA. Some of these case studies are based on real companies. Others are partially hypothetical, but based on real life experiences we have had in the world of enterprise architecture.
In each case study, we will describe the organizations involved as well as the technological and business challenges and objectives that they have. We will look at the ways in which the business and technological situation would either benefit from an EDA approach. We will look at how the practical issues that arise in its design and implementation. Our goal is to include, where relevant, some organization and non IT issues, such as project management and communication. Of course, we will get into depth on the technologies required to birth the EDA.
Throughout the case studies, we will look at a number of related topics in the field of enterprise architecture that have relevance for learning about EDA. These include SOA infrastructure, governance, and security. Wherever possible, we will try to point out business issues that are relevant, but perhaps not apparent to the technology reader, as well as technology issues that may not be noticed by the business reader.
One of our other goals is to instill in you a good sense of when to use an EDA approach and when not to, for the paradigm is not a panacea for all IT and business problems. This issue reminds of the story of a man who once approached a famous surgeon and said, “You make more money in a week than I make in a year. I don’t think it’s fair. Is what you do so special?” The surgeon replied, “Surgery itself isn’t that complicated. I could probably teach you to do it in a few weeks. What takes the training and skill is knowing when not to operate, and what to do when something goes wrong. Learning those two things can take years.”
So it is with EDA. Developing a Web service is not hard for an experienced developer. Knowing how to use the functions of an SOA to create an EDA, though, is another matter. And, like the surgeon, you would be well served by understanding when to use and not use the EDA approach. If you take away nothing else from this book, consider that there are many cases where an EDA is not the optimal solution to a business issue.
Who Should Read This Book, and How They Should Read it
If you’re holding this book in your hand, you are probably involved with information technology. If you are not in technology, we really admire your desire to be a broadly informed citizen. We have written this book in fairly deep, but not excessively detailed technical language.
This is not a book that is awash in code or extensive jargon. We have made the choice to skip the deep, deep techie language because of the likely blend of readers that we expect to find the subject of EDA of interest to their work. EDA itself is an area that is inherently interdisciplinary. EDA naturally throws together developers, line of business people, IT managers, security specialists, architects, and network operations people. There is probably a whole EDA book for each of those disciplines. Luckily for us, someone else will write them. We wanted to present the topic in a unified approach that a multiplicity of readers could absorb.
Our other guess is that you probably work at a large organization, or with an entity that interfaces with large organizations. Whether you work at a corporation, public sector organization, or educational institution, the issues for EDA are the same. We come from the corporate world, so we have a tendency to talk about “business value” a lot. If you can’t relate to this, we are sorry, but for stylistic reasons we need to use just one measure of efficiency, and in our world, that measure is usually dollars. So, when we talk about “business value”, we mean the economy of effort required to produce a result. It’s a concept that can translate into any organizational agenda.
� Copyright Pearson Education. All rights reserved.
Most helpful customer reviews
22 of 26 people found the following review helpful.
Vacuous Evangelism
By Dennis L. Hughes
I had hoped that this book would help me bridge the communications gap between event-driven systems architects like myself and architects that are primarily used to SOA. I also hoped it would help me to work with the our existing SOA infrastructure to realize the benefits of EDA on a wider enterprise level. My hopes were dashed.
The authors fail to inform us how SOA "enables" the "real-time enterprise". In fact they admit that SOA is not the best way to implement event-driven architectures. Worse, they fail to inform us how EDA can even be implemented on a SOA infrastructure.
The real thesis is that EDA is a valuable and overlooked architectural element. It has been overlooked due to the late emphasis on SOA with it's request-reply model. The authors note that many companies probably already have a SOA in place and promise to inform us how we can implement EDA on top of that. But they don't even try to do this.
The most promising chapter in this regard seems to be "The SOA-EDA Connection". But rather than connect anything the author's present yet another mostly evangelistic overview of EDA in the very beginning. It is noted that "Although simple in concept, the realities of bending the raw Simple Object Access Protocol (SOAP) Web services into a functioning EDA are quite challenging and complex". But no real information is given about how to solve this problem. The authors spend the rest of the chapter discussing how one should design and implement SOA; No mention of EDA or how one is to implement it using an existing SOA infrastructure.
3 of 3 people found the following review helpful.
Good introduction, but skimps on the implementation choices
By Chad Wilson
I came to this book with a background in SoA principles, real-life experience implementing dozens of web services over HTTP in Java (some lightweight, some using full object models in SOAP, some in SOAP with XML CLOBs, some REST-like) and I was looking for a practical survey of how to go about converting your developer's mindset of a typical Web Services/SoA setup into one that supports real EDA, and provides the flexibility required - that I've always noted has been lacking from the designs I have previously implemented. I don't really feel like I got this from this book. I felt like it too quickly eschewed commentary on the specific difficulties in implementing web services like the ones described, instead asserting that merely thinking in an EDA mindset (storing as much state in the message as possible, use pub-sub etc) was enough to ensure the long-term *ilities of your architecture, without really /demonstrating/ how this worked in practice. For example, I didn't really feel like the book covered principles of how to design your SOAP (or other) schemas in such a way to allow your event state models to change over time, whether to publish different "versions" of an event type to different messaging endpoints, how to handle events which can only be handled by one instance of a service (but need to have redundancy and load balancing) -- or other approaches to managing change in your event producers and consumers. I also felt like it accepted UDDI as the solution to service location without criticism; I'd at least expect some commentary on drawbacks or alternatives.
Many such practical concerns when choosing frameworks and the practical concerns with designing such systems seem to have been left as "implementation detail" despite the heavy focus on Governance in later sections making quite a lot of noise about the importance of standardisation and policy. What about the theory and best practice that should go into designing these policies?
Perhaps I was expecting too much from a relatively short book; I just felt that to separate itself from the many SoA books on the market required more detailed analysis (and I mean getting closer to implementation) of the best practice and implementation considerations (i.e. expanded "EDA core components" and "EDA patterns" sections.)
On the plus side, the book is written well, in a good style and generally makes good use of diagrams when necessary, and it's a good overview of the subject area. I found it enjoyable to read. I also agree with many of its conclusions, just was looking for more discussion of ways around the drawbacks to implementing EDA -- other than "make sure you have stakeholder buy in", as in the later sections. Given the "level" of roles the writers are in, perhaps I was expecting the wrong thing from this book in wanting more of a bridge to implementation by developers.
3 of 3 people found the following review helpful.
SOA paradigm shift well explained...
By Maxim Poliashenko
This book caught my interest as I have often heard EDA term before and was very much intrigued by it. Just like an advent of event driven programming brought a landslide change in the level of flexibility and interactivity in desktop applications in 90s, this new architecture style promises the same for large scale enterprise systems. Yet, I had lots of questions as to practical challenges and paradigm shifts which such approach may require. This book not only clarified my question and doubts about feasibility of EDA at the enterprise level, it has lead me to discover many other interesting applications of this paradigm that now I am aspiring to try in my practice.
I would highly recommend this book to those who are looking to take their SOA architecture to the next level.
See all 9 customer reviews...
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