I bought the book through Amazon on pre-order because I am thinking about taking the exam. I am not sure that certifications are for everyone or every employer, but this book is a great read for ANY Java EE developer who wants to stand out a bit. Basically, I don't think you have to be an aspiring SCEA to purchase this book. This book covers topics that most Java EE developers should understand at a basic level. This book will help you become more of a "big-picture" developer.