Waterfall development has been used for decades to develop large, complex systems. Waterfall development programs can take years to complete, with a significant initial time and cost commitment in which requirements are analyzed and derived, and software is designed based on those requirements.
Waterfall development is the classic top-down, milestone-driven development process. It generally consists of requirements, design, implementation, verification, and maintenance phases, as shown:
Development teams progress through these phases, and each phase must be completed prior to moving to the next. It is not uncommon for a development ...