Acknowledgments

We could not have written this book without considerable help from many people. We appreciate the support and encouragement that Elaine Ward and Nancy Letsinger have given us over the past several years as our agility work has evolved and grown. We owe our start to this work to our cherished colleague Suzanne Geigle, who always has new insights and ideas to share with us. We sincerely thank Sanith Wijesinghe for supporting our research. We appreciate the funding that our work has received as part of the MITRE Innovation Program. We deeply appreciate our coauthors and colleagues—Jennifer Myers, Jamie Ann Neidig, Awais Sheikh, Jessica Tierney, and Greg Waldrip—whose deep expertise greatly improved the chapters they contributed to. We received considerable help from Khudadad Cheema, who read drafts with fresh eyes and told us where we had disconnects or incomplete ideas and needed more relevant examples. We cannot begin to convey how grateful we are for Marilyn Kupetz and her superb editing skills; she was also instrumental in helping us conceptualize the book, which made it more engaging and readable. We are also indebted to the reviewers—Peter Baverso, Sarah Modlin, and Jim Wylde—for their constructive advice that improved the book. And our editor Charlotte Ashlock was a pleasure to work with, as were Kate Gibson and Lynn Everett. We pass along our thanks to them and everyone at Berrett-Koehler for their support.