To get the most out of this book

Learning from a book only works if you have the opportunity to implement what you have
learned in practice. That's why you need an Azure subscription. To do this at no cost, you
can use a free Azure trial from https://azure.microsoft.com/en-us/free/.
To understand parts of the book, you also need an installation of Visual Studio. You can use
any edition of Visual Studio. To avoid unnecessary costs, I recommend using the free Visual
Studio Community Edition from https://www.visualstudio.com/downloads/.