Waterfall Model
The Waterfall Model is a linear and sequential software development methodology where each phase must be completed before the next begins, typically including requirements, design, implementation, testing, deployment, and maintenance. It emphasizes thorough documentation and upfront planning, with little room for changes once a phase is finished. This model is often contrasted with agile methodologies due to its rigid structure and lack of iterative feedback loops.
Developers should learn the Waterfall Model to understand traditional project management approaches, especially for projects with well-defined, stable requirements and low uncertainty, such as government contracts or safety-critical systems. It is useful in contexts where regulatory compliance, detailed documentation, and predictable timelines are prioritized over flexibility, making it relevant for legacy systems or industries like aerospace and healthcare.