1. - Individuals and interactions rather than processes and tools - Working software rather than comprehensive documentation - Customer collaboration rather than contract negotiation - Responding to change rather than following a plan
2. 1. customer satisfaction
   1. Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.
3. 2. changing requirements
   1. Welcome changing requirements, even late in development. Agile processes harness change for the customer's competitive advantage.
4. 3. frequent delivery
   1. Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale.
5. 4. work together
   1. Business people and developers must work together daily throughout the project.
6. 5. motivated individuals
   1. Build projects around motivated individuals. Give them the environment and support they need, and trust them to get the job done.
7. 6. face-to-face
   1. The most efficient and effective method of conveying information to and within a development team is face-to-face conversation.
8. 7. measuring progress
   1. Working software is the primary measure of progress.
9. 8. sustainable development
   1. Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely
10. 9. technical & design excellence
    1. Continuous attention to technical excellence and good design enhances agility
11. 10. simplicity
    1. Simplicity — the art of maximizing the amount of work not done — is essential.
12. 11. self-organising teams
    1. The best architectures, requirements, and designs emerge from self-organizing teams
13. 12.reflect & adjust
    1. At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly.