This guide is a comprehensive introduction to basic Agile terminology and thinking. It is continually evolving as we uncover better ways of developing software by practicing and helping others practice Agile. While we have had many customers ask us for a Òchecklist on AgileÓ, every team is different and no two teams practice Agile the same way. This guide serves as a blueprint, not a roadmap. We have defined and outlined the basic principles and practices of Agile.