Long feedback loops are the biggest cause of waste in software development. They are the reason why well over 50% of all newly developed software is seldom or never used. Long feedback loops are the cause of seriously delayed projects, unmanageable software defect counts, and code bases that calcify because of their complexity. Lean Software Development is all about shortening information feedback loops in the software development process and creating flow. The result is increased speed and quality along with lower cost. If this sounds unlikely, consider that in manufacturing, operations, and logistics, lean processes routinely deliver the highest speed, highest quality and lowest cost in extremely competitive environments. This tutorial will show you how to apply the principles that underlay lean manufacturing, lean logistics and lean product development to software development.