The authors examine how a limited view of digital transformation impedes organizations from fully benefiting from the new, Agile ways of working. They attribute this failure, fundamentally, to reliance on traditional architectural stacks where multiple teams and products rely on large, shared layers, and a change in a layer to meet the needs of one product may inadvertently break other products. To support a feature team–based organization, each team must have full end-to-end ownership of its stack, which consists of smaller, decoupled parts — microservices — that are loosely bound together. The authors advocate domain-driven design and the atomic design principle as the basis for enabling reuse.