Organizations that build and run large-scale software systems are turning to organization designs that emphasize the flow of change from concept to working software—what we might call “low friction” software delivery. Older organizational models—with functional silos between different departments, heavy use of outsourcing, and repeated hand-offs between teams—do not provide the safety at speed or the organizational feedback mechanisms necessary for the ongoing evolution of business services needed to respond to customer and market conditions on a daily basis.