Yes, you are correct there are many flavors of Agile. XP being only one. Extreme Programming (XP) Scrum Agile Modeling Adaptive Software Development (ASD) Crystal Clear and Other Crystal Methodologies Dynamic Systems Development Method (DSDM) Feature Driven Development (FDD) Lean software development Agile Unified Process (AUP) I don't think you can equate XP to agile. Many of these methodologies have varying degrees of the word extreme. The key thing is to find one that is a close fit to your needs, modify it to meet your needs and blast away.