Final answer:
In an iterative development process, deliverables are produced and refined through repeated cycles of prototyping, testing, and evaluation. This repetitive, cyclical activity, often described as a spiral design process, ensures the final product meets all necessary criteria and constraints by progressively adding functionality and improvements.
Step-by-step explanation:
In an iterative development process, the deliverable is produced through a series of iterations that successively add functionality within a predetermined time frame. This process is commonly used in engineering and related fields like software development. An iteration involves prototyping, testing, and refinement of a design, gradually improving upon it based on feedback and further understanding. As each cycle of the iterative process is completed, the product or design evolves until all necessary features are included and any issues are resolved, typically by the final iteration.
During each iteration, necessary changes and enhancements are made as weaknesses in the design are identified and opportunities for improvement arise. The iterative process can be visualized as a spiral design process, reflecting the cyclical nature of prototyping and evaluating that is essential for refining the design. As this cyclical and repetitive process unfolds, the deliverable matures until it meets the established constraints and fulfillment criteria.
Please note that an essential aspect of the iterative development process is the acceptance that additional time and resources are often needed for each iteration, which is crucial in planning to prevent the project from going over budget or falling behind schedule. The final product, therefore, emerges not from a linear progression but through this continuous cycle of refinement.