Talking about Advantages of Waterfall Model in Software Testing: A waterfall development process is a proven way to be sure your business runs smoothly. There is a set with deadlines for each stage of development and a product can proceed through the development process model phases one by one. The waterfall development process model divides the product development cycle into several stages. The advantage of waterfall development is that it follows the concept of departmentalization and control. Here are few limitations of the Waterfall Model: The disadvantage of the waterfall approach is that it requires a lot of time, effort, and money. In addition, it is a model where requirements are at risk of changing significantly. With a continuous flow of requirements, status updates, and changes, a waterfall process is often the least flexible and most risky way of managing a project.