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Project Management & Agile · Intermediate

Iron Triangle Inversion

Agile reframing of the triple constraint in which time and cost are fixed and scope is variable.

Definition

In predictive projects scope is fixed and time and cost are estimated; in agile, fixed-length iterations and stable teams fix time and cost, and the backlog is prioritized so the most valuable scope is delivered first.

Example

A team commits to a 6-month, 8-person budget and delivers the highest-priority features within it.

Exam tip

Exam questions on agile constraints expect 'scope is variable'.

Related terms