David Scott Bernstein is the author of the book Beyond Legacy Code: Nine Practices to Extend the Life (and Value) of Your Software. It’s an insider’s view of the software industry drawn from his decades of hands-on experience as a software developer, trainer, and consultant to some of the biggest players in the business. David’s continuing passion for software design and construction has led him to train more than 8,000 professional developers since 1990 at hundreds of companies around the world including Amazon, Yahoo, and Microsoft. His consulting firm, To Be Agile (http://ToBeAgile.com), helps developers adopt Extreme Programming practices such as test-first development, pair programming, and refactoring.