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 as well as architecture-first principles. 5. Using visual modeling to design the system architecture and components. 6. Integrating development through a collaborative platform.