Which project methodology emphasizes flexibility and customer collaboration?

The project methodology that emphasizes flexibility and customer collaboration is Scrum. Scrum is an Agile framework that focuses on iterative development and encourages regular feedback from customers and stakeholders. It promotes adaptability within a project by allowing teams to respond to changes and new insights throughout the project lifecycle. Scrum involves short, time-boxed iterations called sprints, during which teams work to produce functional increments of a product. This approach allows for continuous improvement and ensures that the end product aligns closely with customer needs and priorities.

In contrast, Six Sigma primarily targets process improvement and quality management through data-driven methodologies, which may not prioritize flexibility or direct customer involvement to the same extent. The Waterfall model follows a linear and sequential approach, where each phase must be completed before moving to the next, limiting adaptability. PRINCE2, while providing a structured and customizable project management framework, also tends to be more prescriptive compared to the iterative and collaborative nature of Scrum. Thus, Scrum stands out as the methodology that best emphasizes flexibility and customer collaboration.