A Comparison of Traditional and Agile methods

The systems development life cycle (SDLC) is a conceptual model used to develop information systems with well-defined phases. The phases are: user requirements definition, system requirements definition, analysis and system design, system development, testing, implementation, and maintenance. Some of the models used are Waterfall, spiral, and rapid prototyping. These models are called plan-driven, lying on one end of the "planning emphasis" continuum. At the other end of the continuum are the Agile methods, which are considered adaptive rather than predictive. This paper presents a systems-theory perspective of both models, including the inherent challenges that need to be addressed when transitioning from traditional to Agile methods.

Read more https://www.scrumalliance.org/community/articles/2013/january/traditional-and-agile-methods-an-interpretation

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