Shortcomings of Waterfall Development Model

The disadvantages of waterfall development are also obvious. If each stage of the period is not resolutely implemented and realized, then the hidden problems will eventually affect the success of the project. Although waterfall management is very convenient for project managers, it may be too harsh for developers. Because the testing process is implemented after the development stage, the problems exposed by subsystem testing may require immediate code modification, which greatly increases the cost of planning architecture.

The debugging process can be very complicated, because developers can usually work on other projects at the same stage, and the required software modification may reduce the productivity and work quality of developers. Sometimes the workspace must be concentrated in one place, which threatens the integrity of the solution.

Another possible danger is that you won't know whether the initial prediction is successful or not until the solution is launched, so the time and space left to correct the problem is very limited. However, omissions and defects in the design work may seriously affect the start date of the solution.

Another problem with this model is that there is almost no time to get feedback except at the end of the phase, and once the development work starts, there is no room for modification. Finally, if the surface function or performance of the system test fails to meet the requirements, it may not be possible to correct the problem at this time.

Before deploying the waterfall development model, you must carefully evaluate your environment and conditions. If the customer wants to join in after the development work starts, or you have to deal with many unknown problems, then you may have better adopt a more repetitive development process.