Why Software development failure?

Here is some main reason for software development failure:

Fail in requirement elicitation.

Project failure usually started at the very beginning. The misunderstanding between SW engineer and the customers will lead to a disaster. Sometimes clients fail to tell the SW engineer what the product can do for them. This can be avoided by using prototyping. Using prototyping, the prototype can give clients a brief to their final product. Any critical errors can be avoided before project finals.

Budgets

Wrongly estimate budget will lead to project failure, over budget will even terminate the entire project. Therefore, carefully estimate the budget is essential.

Time management

Software development is different with building a bridge. It is difficult to estimate how long the development time takes. A late of a single component will make the project late.