The Agile Release Train (ART) is a long-lived team of agile teams, typically consisting of 50-125 individuals that serve as the program-level value delivery mechanism in SAFe. Using a common cadence, each train has the dedicated resources necessary to continuously define, built, test and deliver value to one of the enterprises value streams. Each train produces valuable and evaluate-able, system-level increments every two weeks, and additional quantum, Program Increment milestones every 8-12 weeks. ARTs can Release at any time in accordance with market needs.