Large-Scale Scrum (LeSS) is a framework for scaling agile development to multiple teams. LeSS builds on top of the Scrum principles such as empiricism, cross-functional self-managing teams and provides a framework for applying that at scale. It provides simple structural rules and guidelines on how to adopt Scrum in large product development. The LeSS Foundations course is a brief introduction into the LeSS Framework. It provides an overview of the framework and some of the essential concepts that it uses.