There is no doubt to say that this book is one of the best books to study and get acquainted with the concept of ESB. The brilliant presentation in the book using simple language, perfect diagrams and case studies make it self explanatory and interesting to read.
The book focuses very well on the functionality of ESB, what it is and does, and how it solves the practical problems ( integration, scalability, fault tolerance etc), faced in enterprises and their automated business processes.