Book "Wow! Service" was written by Vitaly Antoshchenko, head of the United Consulting Group. This edition is dedicated to the theory and practice of providing high-quality customer service, which is necessary for the successful and productive work of any organization. The book consists of seven chapters, each of which, in a simple and understandable language, describes the general principles of the strategy for building an ideal customer-oriented company. In his book, the author has combined the most valuable facts and terms about the practice of providing services, forming a dictionary of key terms. The reader is offered useful practical advice (including taking into account the experience of foreign firms) on developing professionalism, communicating with clients, creating a strong and trusting atmosphere in the team. The work was created taking into account the positive practical experience of the author, which makes it a valuable tool in the work of any professional in the field of sales, service and consulting services.