The 12 principles of the Agile Manifesto expand the four core values into practical guidelines. These principles stress early and continuous delivery of valuable software, welcoming changing requirements, and frequent delivery of working solutions measured in weeks rather than months. Key principles include satisfying customers through early delivery of value, embracing changing requirements, delivering working software frequently, and maintaining daily collaboration between business people and developers.

The principles also emphasize motivated individuals, face-to-face communication, sustainable pace, technical excellence, simplicity, self-organizing teams, and regular reflection. While created for software development, these principles have proven effective for many complex, collaborative work contexts. The themes of customer focus, adaptability, collaboration, quality, and continuous improvement now influence fields from marketing to education.^[1]