Which project management methodology focuses on iterative progress through small, incremental changes?

The methodology that focuses on iterative progress through small, incremental changes is Agile. Agile project management emphasizes flexibility, continuous improvement, and the ability to adapt to changing requirements. This approach is designed to accommodate the dynamic nature of projects, especially in fields like software development, where client needs and market conditions can shift rapidly.

Agile involves breaking down projects into smaller tasks or iterations, allowing teams to prioritize and deliver parts of a project incrementally. This not only helps in gaining early feedback from stakeholders but also ensures that the final product aligns more closely with user needs and expectations. The iterative process also allows teams to reflect on their performance and make adjustments in real-time, promoting continuous learning and adaptation.

In contrast, methodologies such as Waterfall follow a linear approach where phases are sequentially completed without revisiting earlier stages once they're finished. PRINCE2 is a structured project management methodology that emphasizes control over the stages of a project but does not inherently focus on iterations. Scrum, while also Agile in nature, is just one framework within the Agile methodology that organizes work in sprints, but Agile as a whole encompasses a broader range of iterative practices. Thus, identifying Agile as the correct answer recognizes its fundamental principle of iterative development through small changes.