Organizations with overloaded portfolios confuse buyers and sales reps and tend to spread investment dollars too thin and starve innovation. Strong product portfolio management practices continuously organize offerings around portfolio objectives, which are tied to overall business strategy and target customer needs. This encourages data-driven portfolio investment decision-making and optimization activities that quickly respond to change. In this report, we outline the importance of effective product portfolio management and introduce the Forrester Product Portfolio Design And Management Framework, a customer-centric model for strategically defining and managing an offering portfolio.