Final answer:
The implementation phase is where a project team delivers work, creates accurate cost estimates, and reports to stakeholders, fine-tuning a detailed design through drawings, models, and prototypes.
Step-by-step explanation:
In the implementation phase, the project team creates a definitive or very accurate cost estimate, delivers the required work, and provides performance reports to stakeholders. During this phase, the creation of a detailed design is critical. The team will further develop their general design concept into specific details that can be manufactured. This includes creating drawings, models, and prototypes, while continuously testing and refining the product as new challenges emerge. This stage encompasses both the production of physical or virtual models and the refinement of designs based on criteria and constraints. Moreover, in this phase, mathematical models might be utilized to accurately estimate costs and analyze financial dimensions of the designs in comparison with other options.