Software development methodology difference [closed]

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Does anyone happen to know if Joint Application Development is categorized under Agile methodology or are they two separate development processes? It appears that SCRUM is a type of agile but JAD is related to RAD and is outside of agile.

Any information on differences are appreciated.

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Agile is not a methodology in itself. It is a set of guidelines (the manifesto), a mindset, a way of approaching software development. SCRUM is one manifestation of that as a concrete methodology.

JAD (it appears from Wikipedia) is related to requirements gathering in DSDM. DSDM is typically classed as an agile methodology so I guess your answer is there.