A Functional Design Document (FDD) is a detailed blueprint that outlines how a system or software application will function to meet business requirements. It includes:
- Business Requirements: Detailed descriptions of the business needs and objectives the system aims to fulfill.
- Functional Specifications: Specific functionalities the system must have, including use cases, process flows, and user interactions.
- System Inputs and Outputs: Information on what data the system will receive and produce.
- Diagrams and Mockups: Visual representations of the system’s design, such as flowcharts and user interface mockups.
- Regulatory Compliance: Details on how the system will adhere to relevant regulations and standards.
When is an FDD Needed?
An FDD is typically needed during the design phase of a project. It serves several important purposes:
- Guiding Development: Provides a clear roadmap for developers, ensuring they understand the functional requirements and how the system should operate.
- Ensuring Alignment: Helps ensure all stakeholders, including business leaders and technical teams, are aligned on the project’s goals and requirements.
- Facilitating Communication: Acts as a single source of truth, improving communication and reducing misunderstandings.
- Supporting Testing and Training: Provides a basis for creating test cases and training materials.
Creating an FDD can save time, resources, and money by providing a clear list of design and functional requirements on which everyone involved can sign off
Does this help clarify when and why an FDD is needed?
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