The Triple Constraint

The Triple Constraint describes how the basic elements of a project-scope, time, and cost – interrelate,

Scope: What work will be done as part of the project? What unique product, service, or result does the
customer or sponsor expect from the project? How will the scope be verified?

Time: how long should it take to complete the project? What is the project’s schedule? How
will the team track actual schedule performance? Who can approve changes to the schedule?

Cost: what should it cost to complete the project? What is the project’s budget? How will costs be
tracked? Who can authorize changes to the budget?