I bought the book but I haven’t managed to go through it yet. What I can tell is that some real work went into the book. I don’t intend to deploy things myself

I bought the book but I haven’t managed to go through it yet. What I can tell is that some real work went into the book. I don’t intend to deploy things myself as I use Heroku and Cloud 66 but sometimes one still has to understand how things work.