Throw-Away Prototyping: Also known as close ended prototyping. Throwaway or Rapid Prototyping refers to the formation of a model that will eventually be discarded rather than becoming part of the final delivered software. Rapid Prototyping concerned making a working model of various parts of the system at a very early stage, after a relatively short investigation. The method used in building it is typically quite informal, the most significant factor being the speed with which the model is provided