The waterfall model
The waterfall model is a method for organizing the phases of a project in a linear, sequential order. This means that each phase builds on the deliverables of the one that came before it and corresponds to a different level of task specialization. This method is frequently used in a number of engineering design specializations. Since progress is made in mostly one direction (downwards, like a waterfall), this methodology is typically considered to be one of the least iterative and adaptable models in software development. The reason for this is that a team can only move forward in the waterfall process, never backward. This linear progression of immutable phases includes requirements gathering & analysis, system design, implementation, testing, deployment, and maintenance.
The waterfall model was the very first kind of release management SDLC to be used in software development. The manufacturing and construction sectors are credited with being the birthplace...
