If agility is about delivering customer value by being flexible, then how can adherence to a traditional scope, schedule, and cost plan be the best way to measure performance? It can't be. With pervasive change the norm, we can no longer "follow the plan with minimal changes." Instead, our focus needs to be on successfully adapting to inevitable changes. We need to move beyond the classic Iron Triangle measures to an Agile Triangle that focuses on Value, Quality, and Constraints.