This document compares and contrasts the SAFe and LeSS frameworks for scaling agile practices in large organizations. It describes SAFe's use of Agile Release Trains, planning events, and roles. An example is given of SimCorp's experience transforming to SAFe, which resulted in increased throughput and reduced errors. LeSS is described as prescribing less and focusing on building a learning organization through cross-functional feature teams without dependencies. The risks of each approach and how to start the transformation are also outlined.