Six sigma and many other forms of project management use "tollgates" to check the progress of projects in relation to their objectives. When an assigned individual approves that the team has successfully completed one stage of the project, the team then can "pass" on to the next stage of the project or initiative. If the team does not successfully complete a stage they can not "pass" on to the next phase.
In six sigma the DMAIC methodology is used. Team members may establish tollgates between the Define, Measure, Analyze, Improve and Control phases of the methodology. At each of these points the team must receive approval before moving on.
What benefits do you see in having and using tollgates within a project?
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