I'd like to thank James Jones for giving me this big opportunity and the experience of a lifetime—of authoring a book.

A special thanks goes to the content editor, Ritika Singh, who helped me a lot with her talent and patience. Thanks to the technical editor, Vijin Boricha, for his precious work of testing all the technical aspects of the book.

A big thank you goes to my friend and colleague, Fabio Marinelli, who reviewed the entire book without missing a chapter!

More and more thanks go to all the other reviewers: Kylin Soong, Juraci Paixão Kröhling, and Brian Dwyer.

I would also like to thank Stefano Linguerri and Matteo Bernacchi, who helped me a lot in writing the messaging and the Docker and OpenShift recipes, respectively.

Last but not least, I really need to mention and thank my daughter, Giada, who is definitely my life. Without even knowing, she helped me in different ways, giving me the right distractions at the right moments.

I'd like to dedicate this book to Giada.