Grey is all theory. What you'll find in the Books is more often than not different from what you need in your daily project work.
Our Trainers are from the Practices and have personal experience from a lot of projects.
A few months after each training we call our participants and ask, what the benefit of the training was. This way we make sure that those topics are addressed in our training, which are relevant for your environment. The feedback of the last few years regading the Practice relevance of our trainings is most positive. Our practice examples are clear and link to the theory. This way it is also easier for you to pass the Exam.