The Forrester Growth Discovery Model is a four-step approach that helps portfolio marketers streamline the analysis and selection of new markets and buyer audiences. The first step of the model, assess, includes three primary activities: market assessment, competitive analysis, and organization assessment. These assessments are critical to ensuring the alignment of a new growth strategy with an organization’s aspirations and capabilities. In this report, we describe three activities portfolio marketers must complete to understand the current state of their business.