As mentioned in the lesson, the product life cycle curve has different phases and each one contains a different set of characteristics. These phases are:

– Development
– Introduction
– Growth
– Maturity
– Decline
During MDD and AMDD courses we extensively learned about the development phase consisting of market research, design controls, design transfer, IQ, OQ,PQ. During the lecture we had an insight of introduction. Which phase do you guys think it is the most expensive one and why? Could you explain in some detail the rest of the phases? Some products do not follow the traditional product life cycle curve, any comments on it?