- Référence externe : https://www.atlassian.com/agile/agile-at-scale/agile-iron-triangle
iron triangle models constraints of project management and these constraints are considered “iron” because you can’t change one constraint without impacting the others. The original iron triangle, proposed by Dr. Martin Barnes in 1969, follows a waterfall approach to product development: scope is fixed and resources and time are variable. For a software team, this would mean that teams start a project by defining product requirements to determine a project’s scope (a list of work items). The resources and schedule are variable and are estimated depending on the fixed scope.