T his paper is a review of research in product development, which we define as the transformation of a market opportunity into a product available for sale. Our review is broad, encompassing work in the academic fields of marketing, operations management, and engineering design. The value of this breadth is in conveying the shape of the entire research landscape. We focus on product development projects within a single firm. We also devote our attention to the development of physical goods, although much of the work we describe applies to products of all kinds. We look inside the "black box" of product development at the fundamental decisions that are made by intention or default. In doing so, we adopt the perspective of product development as a deliberate business process involving hundreds of decisions, many of which can be usefully supported by knowledge and tools. We contrast this approach to prior reviews of the literature, which tend to examine the importance of environmental and contextual variables, such as market growth rate, the competitive environment, or the level of top-management support.
Intense competition in many industries forces manufacturing firms to develop new, higher quality products at an increasingly rapid pace. Overlapping product development activities is an important component of concurrent product development that can help firms develop products faster. However, since product development activities may be coupled in complex ways, overlapping interrelated activities can present many difficulties. Without careful management of the overlapped product development process, the development effort and cost may increase, and product quality may worsen. This paper goes beyond the common recommendation to simply overlap activities as much as possible. We present a model-based framework to manage the overlapping of coupled product development activities. The model and framework identify conditions under which various types of overlapping are appropriate for a pair of coupled activities. We illustrate the model and framework with industrial applications involving the development of electronic pagers and automobile doors.product development, concurrent engineering, overlapping
In their quest to manage the complexity of offering greater product variety, firms in many industries are considering platform-based product development. Product platforms, which are component and subsystem assets shared across a product-family, enable a firm to better leverage investments in product design and development. While the platform approach offers a number of benefits, it also imposes certain additional costs that have not received adequate research attention. In this paper, we use an industrial example both to illustrate some of the costs and benefits of platform-based product development and to motivate the development of a mathematical model. The model is formulated to better understand the appropriateness of product platforms and their impact on product-planning decisions. Our results indicate that platforms are not appropriate for extreme levels of market diversity or high levels of nonplatform scale economies. Also, a firm's product positioning and introduction sequence decisions made during the product-planning phase are significantly impacted by the presence of platforms. Specifically, a platform increases the separation among products and offers a multitude of product introduction strategies. We translate our model findings into a managerial framework.Product Development, Modular Platforms, Component Commonality, Design Reuse
In highly dynamic environments, characterized by changing customer preferences and uncertainty about competitive products, managing the development of a new product is a complex managerial task. The traditional practice, recommended in the literature, of reaching a sharp definition early in the new product development (NPD) process may not be optimal, desirable or even feasible in such dynamic situations. Under high uncertainty, forcing early finalization of specifications may result in a firm getting locked into an incorrect definition. Based on our study of NPD in the high technology industry, we present a model of an approach called real-time definition, in which a firm adapts its product definition process to the market and competitive environment. Uncertainty in the product definition is resolved through frequent, repeated interactions with customers and using a flexible development process. We find that early definition is optimal only in a limited set of situations. To maximize its anticipated profits, a firm should tune its definition process to the prevailing level of market uncertainty, the marginal value of information obtained from the customer during the NPD process, and its own risk-profile and internal development capabilities. Effects of competition on a firm's definition approach are also examined, and implications for managers of a NPD process are presented using a conceptual framework.New Product Development, Product Definition, Dynamic Environments
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