Agile Architecture Revolution

JASON BLOOMBERG is President of ZapThink, a Dovel Technologies Company. He is a thought leader in the areas of Enterprise Architecture, Service-Oriented Architecture, and Cloud Computing, and helps organizations around the world better leverage their IT resources to meet changing business needs. He is one of the original Managing Partners of ZapThink LLC, a leading SOA advisory and analysis firm, which was acquired by Dovel Technologies in August 2011. He developed the only vendor-independent, Enterprise Architecture–focused SOA and Cloud Computing training available on the market. This training includes Enterprise Architecture considerations for various Cloud-based options, how to put together a Cloud road map, and how best to communicate the position the Cloud should take in the greater context of agile Enterprise Architecture.

• FOREWORD xiPREFACE xvPART ONE—Enterprise as Complex System 1CHAPTER 1 Introducing Agile Architecture 3Deconstructing Agile 4Architecting Software/Human Systems 8Meta Thinking and Agile Architecture 10Defining Architecture: Worse Than Herding Cats 12Why Nobody Is Doing Enterprise Architecture 13Complex Systems: At the Heart of Agile Architecture 16CHAPTER 2 Shhh, Don’t Tell Anyone, but Let’s Talk about Service-Oriented Architecture 21Rumors of SOA’s Demise . . . 23Thinking Outside the SOA Box 26Okay, So How Did SOA End Up Dead in the First Place? 28Services: The Core SOA Lesson 31Implementing Policy-Driven Behavior 34What’s the Deal with Web Services? 38The Third Conversation 41Freeing Architecture from the Underlying Infrastructure 44Implementing SOA without an ESB 47The SOA Marketing Paradox and the Wizard of Oz 48CHAPTER 3 Governance: The Secret to Satisfying the Business Agility Meta-Requirement 51Organizational Context for Governance 52Architecture-Driven Governance: Beyond IT Governance 54Rethinking Quality 57Introducing the Agility Model 60Meta-Policy Governance 63Interrelationships among Governance, Quality, and Management 64Four Stages of Agile Architecture Governance 67Architecture-Driven Governance and the Butterfly Effect 70CHAPTER 4 The Enterprise as Complex System 73Engineering the Enterprise with Complex Systems Engineering 73Best-Effort Quality and the Agile Architecture Quality Star 76Best-Effort Quality in Action 80Resilience: The Flip Side of Agility 83The Flash Mob Enterprise 86CHAPTER 5 Agile Architecture in Practice 89The Composition Vision for IT 90Vision to Reality: Rethinking Integration 93Aligning Agile Architecture with BPM 96Business Modeling and Agile Architecture 98Processes That Satisfy the Meta-Requirement of Agility 100PART TWO—The ZapThink 2020 Vision 103CHAPTER 6 You Say You Want a Revolution . . . 105Five Supertrends of Enterprise IT 108Continuous Business Transformation: At the Center of ZapThink 2020 110Where’s Our Deep Interoperability? 112The Crisis Points of the ZapThink 2020 Vision 113Big Data Explosion and the Christmas Day Bomber 116Stuxnet and Wikileaks: Harbingers of Cyberwar 119Cybersecurity the Agile Architecture Way 125The Generation Y Crisis Point 128CHAPTER 7 The Democratization of Enterprise IT 133Demise of the Enterprise IT Department 134The Agile Architecture Approach to IT Project Management 136Crisis Point: The Enterprise Application Crash 138Replacing Enterprise Software: Easier Said than Done 144PART THREE—Implementing Agile Architecture 147CHAPTER 8 Deep Interoperability: Getting REST Right (Finally!) 149Programmable Interfaces: The Never-Ending Story 150REST to the Rescue 155Dogmatic vs. Iconoclastic REST 161REST vs. Web Services 163Can REST Fix Web Services? 166Does REST Provide Deep Interoperability? 168Where Is the SOA in REST-Based SOA? 170REST-Based SOA: An Iconoclastic Approach 173CHAPTER 9 Finally, Let’s Move to the Cloud 177Deja Vu All Over Again 179Countering Vendor Spin with Architecture 181Interlude: Neutralizing the Cloud Threat 183Why Cloud Computing Scares the Platform Vendors 186Architecting beyond Cloud Computing’s Horseless Carriage 187BASE Jumping in the Cloud: Rethinking Data Consistency 190Cloud Multitenancy: More than Meets the Eye 193Keys to Enterprise Public Cloud 197Why Public Clouds Are More Secure than Private Clouds 200Why You Really, Truly Don’t Want a Private Cloud 202Avoiding Unexpected Cloud Economics Pitfalls 205Rethinking Cloud Service Level Agreements 208Are Your Software Licenses Cloud Friendly? 212Garbage in the Cloud 214Beware Fake Clouds 217Learning the Right Lessons from the 2011 and 2012 Amazon Crashes 219Failure Is the Only Option 221Cloud Configuration Management: Where the Rubber Hits the Clouds 223Clouds, SOA, REST, and State 225The Secret of a RESTful Cloud 229BPM in the Cloud: Disruptive Technology 232Cloud-Oriented Architecture and the Internet of Things 236Location Independence: The Buckaroo Banzai Effect 238Postscript: The Cloud Is the Computer 241CHAPTER 10 Can We Do Agile Enterprise Architecture? 243Frameworks and Methodologies and Styles, Oh My! 245The Beginning of the End for Enterprise Architecture Frameworks 248How to Buy an Agile Architecture 250The Dangers of Checklist Architecture 253CONCLUSION 257LIST OF ABBREVIATIONS 261ABOUT THE AUTHOR 265INDEX 267