I would like to thank the Almighty One for His encouragement and this opportunity, and my wife's constant support and patience throughout the long process of writing this book. Thanks also to those companies and teams, such as Elastics, Investor Exchange (ETF APIs), TD Ameritrade (commission-free ETF), Pivotal Software (Spring Tool Suite), Google (Postman), and Docker, that support open source software so that I can use their technologies as part of the book and make it a success.
– Wai Tak Wong