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Customer Review

43 of 52 people found the following review helpful
5.0 out of 5 stars How to deliver software to users at the click of a button, September 12, 2010
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This review is from: Continuous Delivery: Reliable Software Releases through Build, Test, and Deployment Automation (Addison-Wesley Signature Series (Fowler)) (Hardcover)
This is one of the most important software books published in years. From the beginning and throughout the book, the authors emphasize the importance in establishing one delivery team consisting of various experts throughout the software lifecycle - developers, DBAs, Systems/Operations, network specialists, testers and so on. The overarching pattern the authors describe is the Deployment Pipeline, which is basically a staged process consisting of all of the steps to go from bare/virtual metal to a working system whenever there is a change to source files. Of course, the only way this can be done is through copious amounts of automation. The other key point the authors make is that this automated delivery system - itself - is versioned with every change. Not just the custom source code, but also the operating system(s), tools, configuration and everything necessary to create a working software system - a crucial aspect of the Deployment Pipeline.

To sum up key points from the book in a few bullets:

* The purpose of Continuous Delivery is to reduce the cycle time between an idea and usable software
* Automate (almost) everything necessary to create usable software
* Version complete software systems (not just source code) for every change committed to version control system
* Employ a Deployment Pipeline in which the entire system is recreated whenever a change is committed to the version-control system and provide continuous feedback
* Identify one delivery team consisting of various delivery experts - build, deploy, provisioning, database, testing, etc. - a concept emphasized in the DevOps movement

The authors go into great detail in describing each of these themes. So, if you want the process of delivering software to any target environment - including production - to be a click of a button and something that can be accomplished as often as the business requires, get this book. When you employ the practices in this book, no longer will you need to artificially throttle changes delivered to users for months or even years because of the expense and risk required to deliver software.
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