We want to thank the wonderful community of software professionals that we have the honor to be part of. Thanks for all the conference discussions, thanks for all the blog posts, thanks for all the code. Without you, all our professional lives would be much duller.

We also want to thank those who have brought this book to life. Thanks to our patient editors—Cynthia Kane, Toni Arritola, and Jennifer Stout—who have given us excellent feedback on content and style. Thanks to our wonderful copy editor, Rachel Head, who has polished our rough, nonnative English to the shiny phrasings you read on these pages. And thanks to the Manning production team, who helped turn the manuscript into the book you’re reading. Much appreciation goes to Daniel Terhorst-North for contributing the foreword and for his helpful feedback while writing it. Thanks to Gojko Adzic, Erlend Oftedal, Peter Magnusson, Jimmy Nilsson, Luis Atencio, and John Guthrie for technical reviews and feedback. To all the reviewers: Adrian Citu, Alexander Zenger, Andrea Barisone, Arnaldo Gabriel Ayala Meyer, Christoffer Fink, Daut Morina, David Raymond, Doug Sparling, Eros Pedrini, Henrik Gering, Jan Goyvaerts, Jeremy Lange, Jim Amrhein, John Kasiewicz, Jonathan Sharley, Joseph Preston, Pietro Maffi, Richard Vaughan, Robert Kielty, Steve Eckmann, and Zorodzayi Mukuya, your suggestions helped make this a better book. Thanks to the publisher, who believed in us and the book’s topic. We also want to thank everyone else involved in creating this book, but whom we’ve not interacted with directly. It’s amazing how much goes into creating a book like this.

Dan Bergh Johnsson: First, and above all, I want to thank my lovely wife, Fia, and my wonderful sons, Karl and Anton. Thanks for all the tea and support. You are the light of my eyes. On a more professional note, I’d like to thank Cons Åhs, who taught me programming; Eric Evans, for showing me the rigor of Domain-Driven Design; and John Wilander, who helped me understand the connection between good programming and good security. Thanks to the security professionals who can’t be named. And finally, thanks to the spirit that lives in the computer.

Daniel Deogun: I’d like to thank my beautiful wife, Ida, and my beloved children, Lucas and Isac. Thank you for all your support, love, and understanding during the so-often stressful times while writing this book. This wouldn’t have been possible without you—thank you. I’d also like to thank everyone who’s challenged my ideas over the years; all the questions, comments, and interesting discussions have truly been helpful while working on this book.

Daniel Sawano: I want to thank my wonderful wife, Elin, and my beloved children, Alvin and Oliver, for the patience with all the late nights and long hours spent on writing this book—thank you for all your love and support. I also want to thank everyone I’ve had the opportunity to work with during my career (none mentioned, none forgotten). Thank you for the inspiring discussions, debates, and knowledge-sharing. You’ve all played a part in shaping the ideas that are expressed in this book.