Book excerpt: Management consultants of various kinds play an important role in the world of business, and within other types of organization. The Oxford Handbook on Management Consulting is a comprehensive overview of thinking and research on management consultancy with contributions from leading international scholars. The first section provides an account of the historical developments in management consulting research, and how current thinking has evolved from prior work. The second section focuses on disciplinary and theoretical perspectives, their diversities, areas of synergy, and parallel concerns. The following sections examine consulting as a knowledge business, consultants and management fashion, and the relationship between management consultants and their clients. The Handbook concludes with an assessment of areas of future research and debate. By bringing together a wide range of research and thinking on management consulting across different disciplines, sub-disciplines, and conceptual approaches, the Handbook provides a comprehensive understanding of both current thinking and future directions for research.