Book excerpt: Agile is one of the most popular software development methodologies used by organizations all over the world. It is characterized by adaptability, flexibility and self-organization, but what does it mean to truly "be" Agile instead of just "doing" Agile? This book offers in-depth commentary and explanations on the Agile methodology's foundation, the Agile Manifesto. Larry Apke, a seasoned Agile coach, uses his own experiences to provide a clear, understandable path to implementing and succeeding with Agile for organizations and individuals.