What term refers to a single instance of progressive cycles of analysis, development, testing, or execution?

The term "iteration" refers to a single instance of progressive cycles of analysis, development, testing, or execution in project management and software development. Iterations are essential in agile methodologies, where work is completed in manageable segments, allowing for feedback and adjustments based on stakeholder input and testing results. Each iteration builds upon the previous work, enhancing the final product incrementally and adapting to changing requirements over time.

In contrast, while "cycle" and "phase" might imply stages of a broader process, they do not capture the iterative nature inherent in an "iteration." Each iteration is not merely a segment or stage but a self-contained cycle that prompts a review, learning, and refinement of both the process and the product. The term "session" typically refers to a specific meeting or period of activity rather than the continuous, progressive nature of work encapsulated in an iteration. Thus, "iteration" is the most precise term to describe the described activity.