courage, focus, openness, & respect - principles 14 principles empirical process control; transparency, inspection, adaptation start where you are; incremental evolutionary change; respect existing roles, responsibilities & job titles practices 13 practices 3 artifacts, 5 events visualize work, limit WIP, manage flow, make mgmt policies explicit, improve collaboratevely roles whole team including customer product owner, scrum master, development team use existing cadence 1-2 week iterations 2-4 week iterations flow-based (no iterations) measuring velocity velocity + burndown lead time