Project Management-Project managers use a wide variety of techniques to perform the project cost estimation effort

Project managers use a wide variety of techniques to perform the project cost estimation effort. It is customary, in fact, for the estimator to use at least two techniques and then triangulate the two. Working from your own experiences, what cost estimate methods have you found to be the most useful or least useful?For this Focused Debate, you will take a position on developing accurate cost estimates and defend it.To complete this Discussion:Post: Analyse the biggest challenge you see in developing accurate cost estimates. Defend your position