Learn in the textbookClassic Software Development Models
DefinitionRAD is a development method that puts building a system in a short time first, making use of development support tools (開発支援ツール), reusable components, and prototypes.
ExplanationUsers join a small team, and the system is finished by refining it again and again while looking at prototypes. The development period is often fixed in advance, with the system completed within that window.
AnalogyIt is like assembling furniture from ready-made parts and a kit, talking it over with the customer as you go, and finishing in just a few days.
Memory hookShort for Rapid Application Development, where "rapid" means fast.