High quality resource planning combined with a timeline is essential for any project managed by the Waterfall Method and in particular project portfolio planning. The first method is not necessarily better than the second, but each one simply allows to answer to different challenges. Generally, all organizations have different types of projects that require the use of both methodologies to establish effective work processes. In all cases, choosing one or the other will influence team structure and how the project will be managed, both internally and with the end customer. This is why an agile mode is more widely preferred in IT software development market, because of the constant changes to which companies are subject and fierce competition that characterizes the market. Such a project will perfectly benefit from the strengths of agility, where speed and flexibility are essential to success in this type of market. On the contrary, a project that requires faster development to enter a market subject to many changes will have a lot to gain from being part of an agile development philosophy. In the end, the choice depends greatly on the nature of the project and the market in which it will evolve.Ī project that is very structured in a stable market doesn’t necessarily need to be conducted in an agile way-and will likely benefit more from the organization and structure of cascading methods. Also, once the concrete is solid, the cement workers must already be on another job site.īoth Waterfall and Agile have their strengths and weaknesses. Any delay caused by the lack of cement resources can jeopardize the smooth running of the work of the masons, which could lead to a domino effect down the line, causing delays for everyone. With the example of constructing a house: the workers responsible for the delivery of the cement must perform their tasks on time because the cement phase must be completed before the next phase can begin. With a well-defined scope, the main challenge facing a Project Manager or Portfolio Manager is to plan all types of resources over time and across parallel projects while aligning with the required sequence of actions in each particular project. As for the project implementation schedule, it is a limiting factor in either absolute (like in the case of a conference) or almost absolute. This would mean that, in the case of building a house, you can not later change the number of windows, or in organizing a conference, you cannot change the location nor the subject. This is the end vision of the final product, and it will not change. How does it work? First, the scope of the project is defined. Examples of this could be building a house or organising a conference. The waterfall approach is an appropriate method for a well-defined project with little uncertainty. When should you use the waterfall method? There are times when the waterfall method is appropriate for project management, though the agile method has become increasingly more popular for many types of projects. It doesn’t allow for adaptation for feedback or error correction, and can be slow. However, it is not the best method for all projects, as was seen in the 1990’s. The waterfall method has advantages, mainly that it is easy to understand, execute, and measure. There is no overlap, and the flow is direct, like the path of a waterfall. This is because the output of the first phase is required input for the next. It is very simple in that each phase must be completed before beginning the next. Considered the classic process model, the waterfall model is based on phases.
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