ASK HN: I am writing a book on Serverless Architectures (https://www.manning.com/books/serverless-architectures-on-aws?a_aid=serverless-architectures-on-aws&a_bid=145280de). It's going well but I want it to be the best book of its kind.I need your collective wisdom HN. What kind of topics should it cover? What do you want to see in this book? And, what would make you recommend it to a friend?