This unique book empirically explores the complex issue of how successful multinational firms manage interfaces of R&D, manufacturing, and marketing on a global basis, emphasizing the linkages among them in the value chain. For the encompassing nature of this investigation, the author calls this interface issue "global sourcing." The major objective of the book is to investigate the market performance of various global sourcing strategies employed by multinational firms. Successful Japanese cases are also highlighted. Based on extensive research findings, the book provides practical and normative guidelines for managing new product design and development, manufacturing, and marketing around the world in an era of global competition.