This book ONLY truly focuses on the advantages of using Zend; I read over the summary and figured alright, it'll touch on zend for enterprises and also how to do it without the zend framework, NOPE! I wish I would have NEVER bought this book, there's far better books then this and I would have been better off just reading the zend framework documentation then this book. The last chapter on mysql optimization probably was the only thing that saved this book from me burning it.