Information Systems Development
Agile methodologies are a group of methodologies that utilize incremental changes with a focus on quality and attention to detail. Each increment is released in a specified period of time (called a time box), creating a regular release schedule with very specific objectives. While considered a separate methodology from RAD, the two methodologies share some of the same principles such as iterative development, user interaction, and flexibility to change. The agile methodologies are based on the "Agile Manifesto," first released in 2001.