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 planning upfront, with minimal overlap between stages, making it predictable and easy to manage for well-understood projects. This approach is often contrasted with more iterative and flexible methodologies like Agile.
Developers should learn the Waterfall Model for projects with stable and clearly defined requirements, such as government contracts, safety-critical systems, or large-scale infrastructure where changes are costly and predictability is paramount. It is useful in environments requiring strict regulatory compliance or when working with clients who prefer detailed upfront planning and fixed timelines, as it provides a structured framework with clear milestones and deliverables.