Dean Leffingwell describes how agile methods are being successfully applied to enterprise-class development. • Part I describes team practices that scale to the enterprise, including: structuring agile teams, mastering the iteration, concurrent testing and continuous integration. • Part II describes additional practices necessary to achieve full enterprise benefits. Topics include: intentionally emergent architectures, lean requirements at scale, coordinating releases with the agile release train, agile training and rollout strategies and measuring business performance.