1. The document discusses new product development and the product life cycle. It outlines the stages of new product development which include idea generation, screening, concept development, marketing strategy development, business analysis, product development, test marketing and commercialization. 2. It also describes the five stages of the product life cycle as product development, introduction, growth, maturity and decline. Marketing strategies are tailored to each stage of the product life cycle. 3. The life cycle concept can be applied to products, product classes and brands. However, using it to forecast performance or develop strategies has limitations as not all products follow the same cycle.