The Agile Architecture Revolution – How Cloud Computing, REST–Based SOA, and Mobile Computing Are Changing Enterprise IT

<p>FOREWORD xi</p>
<p>PREFACE xv</p>
<p>PART ONE Enterprise as Complex System 1</p>
<p>CHAPTER 1 Introducing Agile Architecture 3</p>
<p>Deconstructing Agile 4</p>
<p>Architecting Software/Human Systems 8</p>
<p>Meta Thinking and Agile Architecture 10</p>
<p>Defining Architecture: Worse Than Herding Cats 12</p>
<p>Why Nobody Is Doing Enterprise Architecture 13</p>
<p>Complex Systems: At the Heart of Agile Architecture 16</p>
<p>CHAPTER 2 Shhh, Don t Tell Anyone, but Let s Talk about Service–Oriented Architecture 21</p>
<p>Rumors of SOA s Demise . . . 23</p>
<p>Thinking Outside the SOA Box 26</p>
<p>Okay, So How Did SOA End Up Dead in the First Place? 28</p>
<p>Services: The Core SOA Lesson 31</p>
<p>Implementing Policy–Driven Behavior 34</p>
<p>What s the Deal with Web Services? 38</p>
<p>The Third Conversation 41</p>
<p>Freeing Architecture from the Underlying Infrastructure 44</p>
<p>Implementing SOA without an ESB 47</p>
<p>The SOA Marketing Paradox and the Wizard of Oz 48</p>
<p>CHAPTER 3 Governance: The Secret to Satisfying the Business Agility Meta–Requirement 51</p>
<p>Organizational Context for Governance 52</p>
<p>Architecture–Driven Governance: Beyond IT Governance 54</p>
<p>Rethinking Quality 57</p>
<p>Introducing the Agility Model 60</p>
<p>Meta–Policy Governance 63</p>
<p>Interrelationships among Governance, Quality, and Management 64</p>
<p>Four Stages of Agile Architecture Governance 67</p>
<p>Architecture–Driven Governance and the Butterfly Effect 70</p>
<p>CHAPTER 4 The Enterprise as Complex System 73</p>
<p>Engineering the Enterprise with Complex Systems Engineering 73</p>
<p>Best–Effort Quality and the Agile Architecture Quality Star 76</p>
<p>Best–Effort Quality in Action 80</p>
<p>Resilience: The Flip Side of Agility 83</p>
<p>The Flash Mob Enterprise 86</p>
<p>CHAPTER 5 Agile Architecture in Practice 89</p>
<p>The Composition Vision for IT 90</p>
<p>Vision to Reality: Rethinking Integration 93</p>
<p>Aligning Agile Architecture with BPM 96</p>
<p>Business Modeling and Agile Architecture 98</p>
<p>Processes That Satisfy the Meta–Requirement of Agility 100</p>
<p>PART TWO The ZapThink 2020 Vision 103</p>
<p>CHAPTER 6 You Say You Want a Revolution . . . 105</p>
<p>Five Supertrends of Enterprise IT 108</p>
<p>Continuous Business Transformation: At the Center of ZapThink 2020 110</p>
<p>Where s Our Deep Interoperability? 112</p>
<p>The Crisis Points of the ZapThink 2020 Vision 113</p>
<p>Big Data Explosion and the Christmas Day Bomber 116</p>
<p>Stuxnet and Wikileaks: Harbingers of Cyberwar 119</p>
<p>Cybersecurity the Agile Architecture Way 125</p>
<p>The Generation Y Crisis Point 128</p>
<p>CHAPTER 7 The Democratization of Enterprise IT 133</p>
<p>Demise of the Enterprise IT Department 134</p>
<p>The Agile Architecture Approach to IT Project Management 136</p>
<p>Crisis Point: The Enterprise Application Crash 138</p>
<p>Replacing Enterprise Software: Easier Said than Done 144</p>
<p>PART THREE Implementing Agile Architecture 147</p>
<p>CHAPTER 8 Deep Interoperability: Getting REST Right (Finally!) 149</p>
<p>Programmable Interfaces: The Never–Ending Story 150</p>
<p>REST to the Rescue 155</p>
<p>Dogmatic vs. Iconoclastic REST 161</p>
<p>REST vs. Web Services 163</p>
<p>Can REST Fix Web Services? 166</p>
<p>Does REST Provide Deep Interoperability? 168</p>
<p>Where Is the SOA in REST–Based SOA? 170</p>
<p>REST–Based SOA: An Iconoclastic Approach 173</p>
<p>CHAPTER 9 Finally, Let s Move to the Cloud 177</p>
<p>Deja Vu All Over Again 179</p>
<p>Countering Vendor Spin with Architecture 181</p>
<p>Interlude: Neutralizing the Cloud Threat 183</p>
<p>Why Cloud Computing Scares the Platform Vendors 186</p>
<p>Architecting beyond Cloud Computing s Horseless Carriage 187</p>
<p>BASE Jumping in the Cloud: Rethinking Data Consistency 190</p>
<p>Cloud Multitenancy: More than Meets the Eye 193</p>
<p>Keys to Enterprise Public Cloud 197</p>
<p>Why Public Clouds Are More Secure than Private Clouds 200</p>
<p>Why You Really, Truly Don t Want a Private Cloud 202</p>
<p>Avoiding Unexpected Cloud Economics Pitfalls 205</p>
<p>Rethinking Cloud Service Level Agreements 208</p>
<p>Are Your Software Licenses Cloud Friendly? 212</p>
<p>Garbage in the Cloud 214</p>
<p>Beware Fake Clouds 217</p>
<p>Learning the Right Lessons from the 2011 and 2012 Amazon Crashes 219</p>
<p>Failure Is the Only Option 221</p>
<p>Cloud Configuration Management: Where the Rubber Hits the Clouds 223</p>
<p>Clouds, SOA, REST, and State 225</p>
<p>The Secret of a RESTful Cloud 229</p>
<p>BPM in the Cloud: Disruptive Technology 232</p>
<p>Cloud–Oriented Architecture and the Internet of Things 236</p>
<p>Location Independence: The Buckaroo Banzai Effect 238</p>
<p>Postscript: The Cloud Is the Computer 241</p>
<p>CHAPTER 10 Can We Do Agile Enterprise Architecture? 243</p>
<p>Frameworks and Methodologies and Styles, Oh My! 245</p>
<p>The Beginning of the End for Enterprise Architecture Frameworks 248</p>
<p>How to Buy an Agile Architecture 250</p>
<p>The Dangers of Checklist Architecture 253</p>
<p>CONCLUSION 257</p>
<p>LIST OF ABBREVIATIONS 261</p>
<p>ABOUT THE AUTHOR 265</p>
<p>INDEX 267</p>