While reading about the different aspects of project life cycle, I came across another term, ( product life cycle), which seems rather ambiguous. It’s my understanding that the product life cycle consists of sequential, non-overlapping product phases determined by the manufacturing and control need of the organization. Project life cycles occur in one or more phases of a product life cycle. What is the relationship between these two terms? I noted that all projects have a purpose or objective, but in those cases where the objective is a service or result, there may be a life cycle for the service or result, not a product life cycle. If the output of the project is related to a product, what possible relationships can there be?