2. Create Feature Design Document After the user approves the Requirements, develop a design document based on the feature requirements, conducting necessary research during the design process. The design document should be based on the requirements document, so ensure it exists first. Writing Style — Signal over Volume: The design exists to make implementation decisions clear and capture non-obvious thinking. It is not a brochure, a tutorial, or a restatement of the requirements. Favor brevity and substance. - The model MUST keep the design to the minimum length needed to convey the decision…