Fourth printing.

For a complete list of updates and fixes, please see errata.

Third Printing.

For a complete list of updates and fixes, please see errata.

• Second Printing

• First Printing

• In this final chapter, “Chapter 15: Continuous Integration,” you will see how agile teams maintain a culture of production readiness and make deploying their software into production a non-event. By the end of this chapter you will have all you need to ship production ready code as well as a few pointers on where to begin if this is your first agile project.

Two new chapters have been added:

• Chapter 13: Refactoring—Paying down your technical debt

• Chapter 14: Test-Driven Development

We kick off the engineering part of the book with one of the most important software practices known to man—automated unit testing. In Chapter 12, “Unit Testing—Knowing It Works” you will learn how to create powerful suites of automated unit tests to prevent bugs from creeping back into your software while enabling you to make changes to your code with confidence.

This release contains a brand new chapter on visual workspaces—or more specifically, how to set one up for your project. You’ll learn why setting up a visual workspace can be good for you and your project, ideas for what your agile workspace might look like, and how to keep your team focused and the most important to-dos of your project self evident.

• First Beta