The article discusses the role of product modeling and features in product design and manufacturing, reviews the present stage of development of features, and describes some key issues and methods in applying features in manufacturing preparation and management. The competitive environment for most manufacturers is characterized by a number of simultaneous developments. Products are more complex and variable than ever before, yet customers will not pay more for them. The rate of product development has intensified, products that used to stay in the market for five years are now retired and redesigned after one or two years. Customers are increasingly concerned about quality, durability, maintainability, safely, and environmental performance. These developments are forcing manufacturers to look critically at their design and manufacturing activities, searching for opportunities to make radical improvements over business as usual. The wall between design and manufacturing must be breached to make room for concurrent engineering and multifunctional teamwork.