The first stages,especially planning and evaluation phases are emphasised.In these stages the viabillity of a new product should be determined and decided upon.Another frequently mentioned issue is a sharp and early product definition.A detailed project definition in terms of market needs,market preferences and product specifications enables the developer to arrive at sound stop or go decision.Other issues are a cross-functional team approach,a focus on evaluation and decision points,quality execution,quality management of development process and a multi-stage and gate approach.