I would like to thank Veena Manjrekar from Packt Publishing who recommended me to write this book. I also give my gratitude to the editors from Packt Publishing, Sruthi Kutty and Ankita Goenka, who have given me great support during the writing process of this book.

I would like to thank my colleagues from Red Hat who have patiently answered my questions and helped me to review this book. They are Dustin Kut Moy Cheung, Fernando Nasser, Jean-Frederic Clere, Michal Babacek, Mladen Turk, Paul Ferraro, and Radoslav Husar. I would like to thank Martin Večeřa and Ty Lim who have given me a lot of advice.

I would like to especially thank Jean-Frederic Clere who has given me a lot of guidance during the writing process of this book. I would also like to thank all the people from the JBoss community who have inspired me to write this book.

Finally, thank you to my parents, my wife, and my son. I love you.