Source – techrepublic.com Waterfall program design was first described in 1956. It continues to operate today in companies because of the volumes of legacy software that IT still supports. Waterfall is also an excellent, step-by-step software development methodology that has proven itself for decades. The methodology is named waterfall because application development flows only one way: downward, like a waterfall. Waterfall development begins with requirements definition, moving down into design, then programming, test, and implementation. In contrast, DevOps, which can approach