Traditional Waterfall Methodology
The Traditional Waterfall Methodology is a linear, sequential approach to software development where each phase (requirements, design, implementation, testing, deployment, maintenance) must be completed before the next begins, with minimal overlap or iteration. It emphasizes thorough upfront planning and documentation, making it predictable and structured but inflexible to changes once a phase is finished. This model is often visualized as a cascading flow, hence the name 'waterfall'.
Developers should use this methodology in projects with well-defined, stable requirements and low uncertainty, such as government contracts, safety-critical systems (e.g., aerospace or medical software), or when regulatory compliance demands extensive documentation. It is suitable for teams that prefer a clear, step-by-step process with predictable timelines and budgets, but it is less effective for dynamic or innovative projects where requirements may evolve.