Agile is a set of principles and practices for software development that emphasizes flexibility, collaboration, and customer satisfaction. It involves iterative development, where requirements and solutions evolve through the collaborative efforts of cross-functional teams. Agile methodologies, such as Scrum and Kanban, focus on delivering small, incremental changes quickly, allowing for frequent reassessment and adjustment. This approach enhances the ability to respond to change effectively, making it a valuable method in dynamic and complex environments. In the methods-and-patterns quadrant, Agile is placed in the adopt ring due to its widespread acceptance and proven success in improving project outcomes and fostering innovation across various industries.