The main advantage of using an agile framework for development projects is its focus on flexibility and iterative improvement. Agile methodologies prioritize collaboration, frequent feedback, and adaptability to change, making it easier for teams to respond to evolving requirements and market demands. This approach promotes regular communication among stakeholders, ensuring that the product aligns closely with user needs. Agile also encourages continuous testing and delivery, which helps identify and resolve issues early, ultimately leading to higher quality products delivered in shorter time frames.