Evolutionary prototyping model.


	Evolutionary prototyping model Evolutionary prototyping model is a software development lifecycle model in which software prototype created for demonstration and requirements elaboration. Evolutionary prototyping model includes the four main phases: Definition the basic requirements Creating the working prototype Verification of the working prototype Changing or elaboration the requirements Evolutionary prototyping model allows create working software prototypes fast and may be applicable to projects where: System requirements early are not known in advance Creating fundamentally new software Developers are not confident in software architecture and algorithms
	Advantages	Disadvantages
	The model can be used when the requirements cannot or will not be specified. The user can experiment with the system to improve the requirements.	Use of the method is exploratory in nature and therefore constitutes a high-risk endeavor. Strong management is required. This method is used as an excuse for hacking to avoid documenting the requirements or design, even if they are well understood.


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