Synopsis Multi-sourcing is the management and assignment of different business processes or functions among multiple outsourcing vendors. With multi-sourcing approach, multiple suppliers are leveraged to do away with ‘lock-in’ and get the so-called best-of-breed advantages. The need for an alternate, reliable and promising strategy to optimize cost, value and service is strengthening the significance of multi-sourcing. This book throws light on the shift in outsourcing practice, i.e., moving from mega-outsourcing to multi-vendor outsourcing and, at large, focuses on the concept, significance, applications, issues, risks, challenges and management perspectives of ‘Multi-vendor Outsourcing’ or Multi-sourcing. The book aims to sensitize the respective professionals/community with the concept and value of ‘multi-sourcing,’ while offering several best practices for its effective management. At large, this book makes every possible attempt to act as a ready reckoner for the prospective readers, such as senior executives, service providers and other outsourcing professionals, while offering learning value to the academicians and students in B-schools.