What is the greatest weakness of the waterfall model?

One of the greatest weaknesses of the waterfall model is that customer feedback is obtained late. There are often errors identified in the development process, which is a late stage and where changes are costly to implement. The waterfall model doesn't incorporate any feedback loops.



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Agile projects have a failure rate of 10%, while waterfall projects fail 30% of the time. This study aims to compare and contrast agile and waterfall methodologies in order to create a decision tree for selecting the most suitable method for a software development project.

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The Waterfall methodology is a traditional project management practice based on a sequential design process. As the name explains, the phases of a project flow from one completed task to the next and tend to be a very linear and rigid process.

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