This is my first book. It has been a really long journey to get to this day, and, along the way, I had the pleasure of learning a lot from some amazing people who deserve a big thank you.

I would like to start by thanking my teachers from the school of computer science at Salesians of St. Peter in Triana (Seville, Spain) because they made me appreciate the value of education.

To the team at Packt Publishing for their support and hard work; it has been an absolute pleasure to work with you guys.

To the technical reviewers of this book, because their invaluable feedback and hard work really helped to improve the contents of this book.

To my work colleagues and housemates, Sergio Pacheco Gimenez and Adolfo Blanco Diez, for the long technical conversations at midnight and the constant supply of caffeinated beverages.

To my girlfriend, Lorraine, I'm so privileged for your unconditional support and patience. You are simply the best and keep getting better.

Finally, to my family, for always believing in me, for your advice, for being the best listeners, for all your hard work, for forgiving my mistakes, and for all that you have taught me. Thanks for the laughs and thanks for the tears, I'm really proud of being your grandson, son, and brother.