What is the SAFe-recommended size of an effective Agile Release Train (ART)?

An Agile Release Train (ART) is a cross-functional team of agile teams that works together to deliver value. The SAFe framework recommends that an effective ART ideally consists of 50 to 125 people. This size is optimal because it allows for a balance between having enough diversity of skills and perspectives to foster collaboration and innovation, while also remaining small enough to maintain effective communication and coordination.

Within this range, teams can effectively share a common mission and work towards aligned objectives. Having too small of an ART may limit the necessary skill sets and capabilities needed to tackle complex problems, while a larger ART could introduce challenges related to communication and coordination, potentially leading to inefficiencies and misalignment.

The specified range fosters a structured but flexible environment where agile practices can thrive, ensuring that teams can move swiftly while also being able to incorporate the diverse expertise needed to deliver valuable solutions.