There was in fact no correlation between exiting phase gates on time and project success … the data suggested the inverse might be true.

—Dantar Oosterwal, The Lean Machine

Base milestones on objective evaluation of working systems.

—SAFe Lean-Agile Principle #5


Milestones mark specific progress points on the development timeline, and they can be invaluable in measuring and monitoring the progress and risk of a program. Traditionally, many project milestones are based on phase-gate activities. In SAFe, however, progress is indicated differently in that it is supported by a fixed cadence of Iterations and Program Increments, ...

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