The document describes a GDD model for software development projects that addresses common problems such as unclear requirements, changing requirements, insufficient resources, delays, and budget overruns. The key aspects of the model are: 1. Establishing a clear standard development process with defined roles and responsibilities. 2. Building project context through a high-level business requirements model. 3. Describing business requirements using use cases to engage non-technical stakeholders. 4. Employing iterative and incremental development with an architecture-first approach. 5. Using visual modeling to design systems and integrate development through a shared platform.